What did homoousios mean to the Nicene Council?

Introduction

Authors Quoted

Due to ancient documents that have become available, stimulating significant progress in research, scholars today explain the fourth-century Arian Controversy very differently. In fact, R.P.C. Hanson described the traditional account of the Arian Controversy, as was taught in the 19th century, as a complete travestyShow More

This article is based on books published during the last 50 years by specialists in the field. Show More

This article quotes extensively from these authors. However, to simplify reading, almost all quotes are hidden in ‘Show More’ sections. Nevertheless, since the scholarly view of the Controversy has changed so much, and since this is a highly controversial subject, these quotes are a crucial part of this article. 

Nicene Creed

The Nicene Creed, as formulated at the Council of Nicaea in AD 325, is accepted by most denominations. It states that the Son was begotten from the substance (ousia) of the Father, therefore He is of the same substance (homoousios).

The word homoousios consists of two parts: homós = same + ousia = substance (see The Free Dictionary or GotQuestions). Via the Latin, it is sometimes translated as ‘consubstantial’.

Two Possible Meanings

Homoousios (same substance) has two possible meanings because the word “same” has two possible meanings. For example, when I say that John and I drive ‘the same car,’ it can mean that we drive one and the same car or two different cars of the same type. Similarly:

Homoousios (same substance) can mean that the Son is a distinct Being with the same type of substance as the Father, just like a human father and son have the same type of substance. This is called qualitative or generic sameness. Show More

Or it can mean that the Father and Son are a single substance (one Being). This is called numerical sameness because there is only one substance. Show More

Alternative Interpretations

Arius rejected both of these possible meanings. In his view, the Son’s substance is different from the Father’s:

“No doubt he (Arius) believed that the Father and the Son were of unlike substance, but he did not say so directly” (Hanson, p. 187). 

The Trinity doctrine teaches that the Father, Son, and Spirit are a single Being. In the traditional account of the Arian Controversy, the Trinity doctrine has existed from the beginning of that controversy, and homoousios in the Nicene Council also meant ‘one substance’. However, the Trinity doctrine did not exist at the beginning but evolved over the fourth century. ‘Pro-Nicene’ theology only emerged after 360:

“The century is understood as one of evolution in doctrine” (Ayres, p. 13).

“This is not the story of a defence of orthodoxy, but of a search for orthodoxy” (Hanson, p. xix-xx).

“In the period after 360, we also begin to see the emergence of what I have termed throughout the book so far ‘pro-Nicene’ theology” (Ayres, p. 167). (See here for a discussion.) 

In reality, the view that the Son is distinct from and subordinate to the Father, which is today called Arianism, was orthodox when the Controversy began:

“There is no theologian in the Eastern or the Western Church before the outbreak of the Arian Controversy [in the fourth century], who does not in some sense regard the Son as subordinate to the Father” (Hanson, p. 64).

The “conventional Trinitarian doctrine with which Christianity entered the fourth century … was to make the Son into a demi-god … a second, created god lower than the High God” (Hanson Lecture). (See here for a discussion.)

Purpose

This article analyses what homoousios meant (1) before, (2) during, and (3) after Nicaea. It will show that scholars today conclude that homoousios at Nicaea did not mean ‘one substance’:

“We can therefore be pretty sure that homoousios was not intended to express the numerical identity of the Father and the Son” (Hanson, p. 202). Show More

Scholars conclude that it had a much looser, more flexible, and less specific meaning:

“Recent studies on the word homoousios have tended to show, not that it can be reduced to two meanings, one identifying two ousiai as one, and the other conveying a ‘generic’ sense of ‘God-stuff’ (Loofs), but that it was of a much looser, more flexible, indeed less specific and therefore less controversial significance” (Hanson, p. 170).

“Eusebius’ discussion nicely demonstrates the extent to which the promulgation of homoousios involved a conscious lack of positive definition of the term” (Ayres, p. 91). Show More

The Term Arian

As discussed here, the term ‘Arian’ is a complete misnomer because Arius did not develop a new heresy, had only a few real followers, did not leave behind a school of disciples, and was of no real significance after Nicaea. Scholars propose that the term ‘Eusebians’ would be more appropriate to describe the anti-Nicenes because Arius was a member of the group that followed Eusebius of Caesarea. Nevertheless, this article sometimes still uses the term ‘Arian’ because that is the term most people are familiar with.

Before Nicaea

Greek Philosophy and Egyptian Paganism used the term homoousios, not to say that two things are really one thing, but to compare distinct things. In other words, in these systems, it did not mean ‘one substance. Show More

As shown below, at Nicaea, Emperor Constantine insisted on the term. Beatrice suggests that Emperor Constantine proposed the term at Nicaea partly because he was familiar with it from Egyptian paganism (see article).


The Bible never refers to God’s substance and never says that the Son is homoousios with the Father. Show More


The second-century Gnostics used the term, not to say that two beings are one or even equal, but to describe distinct beings as “belonging to the same order of being” (Beatrice). Specifically, they used homoousios to say that lower deities are of ‘a similar kind’ as the highest deity from whom they emanated. However, the word homoousios in the Nicene Creed is not due to a Gnostic influence because “by the fourth century the Gnostic threat to the Christian faith was over” (Hanson, p. 856). Show More


Tertullian (155-220), writing in Latin, nowhere used a term equivalent to the Greek homoousios. However, he did use the term “substance,” and believed that God has a body (is a substance) and that the Son is part of God’s substance. In other words, he did believe that Father and Son are ‘one substance’ and a single hypostasis; a single “individual existence.” This would mean that the Father and Son are homoousios (of the same substance). Show More


Sabellius (fl. ca. 215) wrote in the early 3rd century. Sabellianism is named after him. He and his followers used homoousios to say that Father and Son are ‘one substance’ (a single hypostasis or Person). As discussed here, according to Von Mosheim, for Sabellius, the Father, the Son, and the Spirit are three parts of God. By the time of the Nicene Council, the church had formally rejected Sabellianism. Show More


Origen of Alexandria (c. 185 – c. 253), the most influential theologian of the first three centuries, did not use the term, despite claims to the contrary. He believed that the Son’s substance is different from the Father’s and was anxious to avoid the idea that the Father and the Son were of the same material. Show More

In opposition to Tertullian and Sabellius, who taught that the Father and Son are a single hypostasis, Origen believed that the Father, Son, and Spirit are three hypostases; three distinct Existences or Persons. Show More


Dispute between Rome and Alexandria – Around the year 260, there was a dispute between Rome and Alexandria about the term homoousios. It began when some Libyan Sabellians described the Son as homoousios with the Father. Show More

The bishop of Alexandria (Dionysius), overseeing the church in Libya, believing in three hypostases, rejected the term homoousios because Sabellius, who claimed that the Father and Son are a single hypostasis, used it. Show More

The Libyan Sabellians then appealed to the bishop of Rome (also named Dionysius). Like the Sabellians, Rome believed that Father and Son are a single hypostasis (Person) and described the Son as homoousios with the Father. Show More

It seems as if Rome had some authority over Alexandria because it was able to persuade Alexandria to accept the term. However, Alexandria accepted it reluctantly and only as meaning two substances of the same type. In other words, in Alexandria, the term did not mean that Father and Son are one Being or equal. In the Alexandrian view, Father and Son were two distinct hypostases, with the Son subordinate to the Father. Show More


Condemned in 268 – More or less at the same time, Paul of Samosata used homoousios to describe Father and Son as a single hypostasis (Person). In 268, a council at Antioch condemned both Paul and the term homoousios as Sabellian. This fact caused the 4th-century pro-Nicenes considerable embarrassment. Show More


In conclusion, before Nicaea, only Sabellians favored the term. They include Sabellius himself, the Libyan Sabellians, Dionysius of Rome, and Paul of Samosata. For them, it meant that Father and Son are a single Person. The only non-Sabellian who accepted the term was Dionysius of Alexandria, but he accepted it reluctantly and only as meaning that the Father and Son are two distinct substances (two hypostases) of the same type. Therefore, when the Arian Controversy began, the term homoousios was regarded as Sabellian. Show More


Wikipedia – It is interesting to note that Wikipedia’s article on Homoousios (see here) avoids all discussion of the use of the term before Nicaea. It only mentions that the Gnostics used the term, but the Gnostics cannot be regarded as Christians. I attempted to add to Wikipedia’s article, but was banned from editing Wikipedia. Wikipedia reflects the version of the Arian Controversy which scholars still believed in the 19th century, and which was designed to bolster the Trinity doctrine, but which specialists in the field today describe as a complete travesty.


At Nicaea

The majority opposed Homoousios.

The term homoousios was a surprising innovation in the Nicene Creed

It is not found in the Holy Scriptures, did not appear in any precious creed, was not part of the standard Christian language of the day, was already condemned in 268 at a Council in Antioch as associated with Sabellianism, and was borrowed from pagan philosophy. Not even Alexander favoured the term. For example, a pro-Alexander meeting in Antioch a few months before the Nicene Council formulated a draft creed that “makes no use of the ousia language that we see in Nicaea’s creed” (Ayres, p. 51). Show More

Furthermore, ‘same substance’ implies that God has a body and that there is a kind of common ‘God-stuff’ shared by Father and Son. This made many theologians uncomfortable. Show More

For these reasons, the term homoousios seemed especially objectionable to most delegates at Nicaea

Almost all delegates to Nicaea were from the East, and we do not know of anybody in the East who unreservedly supports the concept that the Son is homoousion with the Father. Eusebius of Caesarea, the leader of the Easterners, accepted homoousion with “obvious reluctance” (Hanson, p. 165). Show More

Emperor Constantine enforced homoousios.

Given these strong objections, some powerful force must have caused its inclusion in the Creed. That powerful force was the emperor. As astounding as it might sound to people who grew up in a culture of separation of Church and State, in the Christian Roman Empire, the emperors were the final arbiters in doctrinal disputes:

“If we ask the question, what was considered to constitute the ultimate authority in doctrine during the period reviewed in these pages, there can be only one answer. The will of the Emperor was the final authority” (Hanson, p. 849). 

Similarly, the Nicene Council, like all fourth-century general councils, was called and dominated by the emperor. It was not a church meeting. It was the Emperor’s meeting. He dominated it and ensured an outcome consistent with what he thought best:

“The history of the period shows time and time again that … the general council was the very invention and creation of the Emperor. General councils … were the children of imperial policy and the Emperor was expected to dominate and control them” (Hanson, p. 855). 

“Constantine took part in the Council of Nicaea and ensured that it reached the kind of conclusion which he thought best” (Hanson, p. 850). This included that he not only proposed the term, but he also used his position to enforce its inclusion, despite the reservations of most delegates. Show More

Emperor Constantine even dared to explain the term to that assembly of the church’s leaders

The Creed says that the Son is of the same substance (homoousios) as the Father because He is begotten from the Father’s substance. As stated, the Eusebians objected that this is unbiblical and untraditional language and sounds as if the Son was begotten like humans through a material, bodily process. Show More

To counter such objections and to enable the Eusebians (Arians) to accept these new terms, Constantine insisted that these terms must be understood without material connotation. That he was able to explain the term and that the meeting accepted his explanation show his dominant role in the council. Show More

Constantine interpreted the ousia terms figuratively. 

Constantine explained that these phrases merely mean that the Son is not out of any other substance, but out of the Father alone. “The creed’s technical terms are all interpreted to mean that the Son is like the Father, and is truly from the Father” (Ayres, 91). Show More

That figurative explanation of the contentious terms allowed almost all delegates to agree to the Creed. But the main point remains that these untraditional terms were included in the Creed due to the emperor’s domination of the council. For more details, see the discussion of Eusebius’ letter.

Why did Constantine insist on homoousios?

Another article argues that Constantine found the term agreeable because he was familiar with it through his contact with Egyptian paganism. But even if that is true, he would not have proposed the term without support from at least some of the delegates. This section shows that he insisted on this term because he had taken Alexander’s part in his dispute with Arius and because Alexander allied with the Sabellians, who preferred the term.

Like the Sabellians, Alexander believed that the Father and Son are a single Person (one hypostasis). 

The term hypostasis, meaning a distinct individual Existence, was the key term in the Arian Controversy. The core of the Controversy was whether the Son is distinct from the Father or part of the Father. The Eusebians (Arians) believed that the Son is a distinct hypostasis (a distinct Person). They believed that the Father, Son. and Spirit are three hypostases. In opposition to them, the Nicenes and Sabellians agreed that the Father and Son are one hypostasis (a single Person). Show More

Alexander’s one-hypostasis theology was in the minority

The delegates were drawn almost entirely from the eastern half of the empire, and, following Origen, the Easterners believed in three hypostases, meaning the Father, Son, and Spirit are three distinct Beings. Show More

Alexander joined forces with the Sabellians. 

Since he was opposed by a ‘three hypostases’ majority, and since his theology was similar to the Sabellians, Alexander joined forces with the leading Sabellians, Eustathius and Marcellus, against the Eusebians. Show More

The Emperor took Aleander’s part. 
“Constantine had taken Alexander’s part” (Ayres, p. 89). “This imperial pressure coupled with the role of his advisers in broadly supporting the agenda of Alexander must have been a powerful force” (Ayres, p. 89). 

It was probably Ossius, whom Constantine appointed as chair of the Nicene Council, and who was also his religious advisor, who advised the Emperor to take Alexander’s side. His humble position in the church, as bishop of the small city of Cordova, did not qualify him as chair of that assembly. He also believed in one hypostasis, similar to Alexander and the Sabellians. Show More

This made the Sabellians very powerful. 

Since the emperor had taken Alexander’s side, this alliance made the Sabellians influential at the council. Eustathius and Marcellus were both influential at the council and may have significantly influenced the wording of the Nicene Creed. Show More

Constantine did not insist on the term because Alexander preferred it.

This point was already made above. In his extant utterances, “Alexander never uses homoousios and indeed seems to be avoiding homoousios. Furthermore, just a few months earlier, the draft statement prepared by the pro-Alexander council at Antioch did not mention ousia or homoousios. Show More

Constantine insisted on homoousios because the Sabellians preferred the term

Since the 3rd-century Sabellians used and preferred the term homoousios, the Sabellians Marcellus and Eustathius seem likely to have endorsed homoousios, understood as meaning ‘one substance’. Once Emperor Constantine discovered that the Sabellians were in favour of homoousios, he pressed for its inclusion. Show More

Another indication of Sabellian domination in the Council is the anathema that confesses one hypostasis.  

The anathema in the Nicene Creed against all “who assert that the Son of God is of a different hypostasis or substance” implies that Father and Son are a single hypostasis (Person) and substance. This is the hallmark of Sabellianism, implying that the Nicene Creed was a Sabellian victory. Show More

Therefore, the Creed was the work of a Minority

The decisions of Nicaea were really the work of a minority. A majority opposed the Nicene creed, and that majority also opposed some of Arius’ extreme statements. Show More

The emperor’s authority and support allowed the one-hypostasis minority to include the term homoousios in the Creed, despite the Sabellian history of the term and despite the objections raised by the majority.

The Eusebian (Arian) majority accepted the emperor’s figurative explanation.

The emperor’s figurative explanation allowed the Eusebian majority to accept the term, albeit reluctantly. They were able to reconcile that explanation with their view that the Son is distinct from and subordinate to the Father. Like Dionysius of Alexandria in the 3rd century, the Eusebians at Nicaea were forced to accept the term, but accepted it only with a generic meaning. Therefore, if we take the majority view of the term homoousios, it had a rather vague meaning, namely, that the Son was truly from the Father. Show More

But the Sabellian minority understood homoousios as meaning ‘one substance.’

The Sabellians, on the other hand, who preferred the term in the first place, understood it very differently, namely, as saying that the Father and Son are ‘one substance’; a single hypostasis (a single Person). Show More

Therefore, after the Council, the Sabellians claimed the Nicene Creed as a victory for their theology:

“In the controversies which erupted over Eustathius of Antioch and Marcellus after Nicaea, both thought their theologies faithful to Nicaea—and they had good grounds for so assuming. Both were influential at the council, and Nicaea’s lapidary formulations were never intended to rule out their theological idiosyncrasies” (Ayres, p. 99). 
However, the Eusebians (Arians) knew that this term implies Sabellianism

For that reason, the same church mainstream (the Eusebians) opposed the Creed after Nicaea:

“It was impossible to rid the term in the minds of many of Sabellian, if not Gnostic associations” (Hanson, p. 437).

“The language of that creed seemed to offer no prophylactic (prevention) against Marcellan doctrine, and increasingly came to be seen as implying such doctrine” (Ayres, p. 96, 97). Show More

The Nicene Creed was a Sabellian victory. 

There are several indications in the Creed that the Son is subordinate to the Father. For example, the Father alone is called “Almighty,” and the Son is God’s agent in creation (see here).

On the other hand, since homoousios was known to be a Sabellian term and given the anathema which implies a single hypostasis, perhaps it was a Sabellian victory.

Hanson says that Nicaea was a drawn battle. Simonetti says that the Creed includes a hint of opposition to the three hypostases theory, in favour of the Sabellian ‘one hypostasis’ theology. Ayres says that it is not an openly Sabellian creed. Since the Nicene Creed is known as the most important creed in the history of the church, perhaps our Trinitarian authors are hesitant to admit that it was a Sabellian victory:

“If we are to take the creed N at its face value, the theology of Eustathius and Marcellus was the theology which triumphed at Nicaea. That creed admits the possibility of only one ousia and one hypostasis. This was the hallmark of the theology of these two men” (Hanson, p. 235). Show More

After Nicaea

Arius’ specific theology was also no longer at issue after Nicaea

He had some extreme views, such as that the Son was made out of nothing, but almost the entire Nicene Council rejected his theology:

“Arius’ own theology is of little importance in understanding the major debates of the rest of the century” (Ayres, p. 56-57).

“He virtually disappears from the controversy at an early stage in its course” (Hanson, xvii). Show More

Alexander was also not a main player after Nicaea. He died soon after Nicaea

“The Index to the Festal Letters of Athanasius dates the death of Alexander firmly to April 27th, 328” (Hanson, p. 175).

By reviving Sabellianism, Nicaea rekindled the Controversy. 

The Controversy after Nicaea was not caused by an an Arian Conspiracy, as is often claimed, but by the Sabellian elements in the Nicene Creed. In the 3rd century, Sabellianism was rejected, but the Nicene Council gave it new life.

“Nicaea has been a catalyst for conflict between pre-existing theological trajectories” (Ayres, p. 101). Show More

The conflict in the decade after Nicaea was specifically about the meaning of the term homoousios. The Sabellians claimed that the Nicene Council had accepted Sabellianism as its formal religion, but the Eusebians (Arians) insisted that the term does not imply Sabellianism. Show More

The Nicene Creed was abandoned after Nicaea. 

The same war that raged between the followers of Origen and the Sabellians in the third century and at Nicaea continued in the decade after Nicaea between the Eusebians (Arians) and the Sabellians. Again Origen’s theology triumphed. All leading pro-Nicenes were deposed. This decade may be called the ‘Post-Nicaea Correction’ because it closed the door to Sabellianism that was opened at Nicaea. Show More

Consequently, the term homoousios disappeared

Since the dispute between the Eusebians and Sabellians focused on the meaning of the term homoousios, the rejection of the Sabellians after Nicaea was also a rejection of the term homoousios. After the Sabellians were removed from their positions, the term homoousios also disappeared from the debate. Nobody mentioned homoousios for about two decades:

“What is conventionally regarded as the key-word in the Creed homoousion, falls completely out of the controversy very shortly after the Council of Nicaea and is not heard of for over twenty years” (Hanson Lecture). Show More

For example, respectively 16 and 18 years after Nicaea, the Easteners formulated the Dedication Creed in 341 and the Westerners a Manifesto at the Council at Serdica in 343. Since both these creeds were formulated during the period when nobody mentioned homoousios, they do not mention the term. However, these councils focused on the more fundamental issue, of which homoousios was only a symptom, namely, whether the Son is a distinct Person. Show More

Athanasius did not defend homoousios in the 330s-340s

During the years 335-6, Athanasius and Marcellus were deposed by the Eastern Church. Meeting in Rome, they joined forces. At that time, Athanasius also developed his polemical strategy; his “masterpiece of the rhetorical art” (Ayres, pp. 106-7). However, in the 330s and 340s, Athanasius’ polemical strategy said nothing about homoousios. Show More

Athanasius revived homoousios in the 350s

By the time Constantius became emperor of the entire Empire in the early 350s, Athanasius had become extremely powerful, and Constantius attempted to isolate Athanasius. Show More

In this time of crisis for Athanasius, in the mid-350s, 30 years after Nicaea, he revived homoousios to strengthen his polemical strategy. In this way, homoousios came back into the Controversy. Athanasius had become the West’s “paragon” (model) (Hanson, p. 304). Following Athanasius, the West also began to support homoousios. Show More

Athanasius revised homoousios because his theology was similar to the Sabellians. 

Athanasius re-introduced the term into the Controversy because, as discussed here, like the Sabellians, he believed that the Father and Son are a single Person (one hypostasis). Specifically, he believed that the Son is part of the Father:

“In the Father we have the Son: this is a summary of Athanasius’ theology” (Hanson, p. 426).

“The fragments of Eustathius that survive present a doctrine that is close to Marcellus, and to Alexander and Athanasius. Eustathius insists there is only one hypostasis“ (Ayres, p. 69). Show More

In response, the Eusebians united, not against Athanasius as such, but against Sabellianism. 

In the late 350s, after Athanasius had reintroduced homoousios into the Controversy, the Eusebians (the so-called Arians) opposed the term but had differing views about the Son’s substance. Nevertheless, they were united against Sabellianism. This confirms that homoousios was a Sabellian term and that Sabellianism remained the main enemy. Show More

Since Arius’ theology did not cause the Controversy, it should not be called the ‘Arian’ Controversy. Rather, since Sabellianism was already rejected in the third century but continued to oppose the Eusebian majority in the fourth, it could more appropriately be called the ‘Sabellian Controversy’.

The Cappadocians accepted homoousios but opposed traditional Nicene theology. 

Basil of Caesarea, the first Cappadocian father, who wrote in the 360s-370s. was the first to accept both the term homoousios and the view that the Son is a distinct Person. He did not follow Athanasius and did not base his theology on the Nicene Creed. He began as an Arian (a Homoiousian), but later also accepted that the Son is homoousios with the Father. However, while Athanasius and other traditional pro-Nicenes explained homoousios as meaning one substance and one hypostasis, Basil, like most other Easterners, taught that the Father, Son, and Spirit are three distinct substances (three hypostases or Persons or Beings). Show More

Where Basil differed from the other Easterners is that he said that the three Persons have exactly the same type of substance. Show More

In other words, Basil opposed the traditional Nicene theology, as represented, for example, by Athanasius, in which the Father and Son are a single hypostasis (a single Person). Show More

In the 360s and 370s, in what is known as the Meletian Schism, Basil’s view of three hypostases brought him to oppose Athanasius and Westerners, who taught one hypostasis. Show More


The Core Issue

One or three Hypostases?

The core issue in the Controversy was whether the Son is a distinct Person. In the Greek of the fourth century, the core issue was whether the Son is a hypostasis (a distinct existence):

This controversy began in the second century. While the Monarchians said that ‘Father’ and ‘Son’ are two names for the same Person, Logos theology dominated, claiming that the Son is a distinct hypostasis.

In the third century, while the Sabellians confessed one hypostasis, Origen’s view dominated, teaching three hypostases.

In the fourth century, the Sabellians, Alexander, Athanasius, and the West continued teaching one hypostasis. With the emperor’s assistance, that view dominated at Nicaea, but the Eusebian three hypostases dominated for most of the century.

Later in that century, the Cappadocians taught three equal hypostases but were opposed by Athanasius and the Western pro-Nicenes, who taught one hypostasis (see here).

However, in 380, Emperor Theodosius made Western ‘one hypostasis’ theology the State Religion of the Roman Empire (see here).

(See here for a discussion of the Real Main Issue in the Controversy.)

Related to Homoousios

The term homoousios was not the core issue. For example, the term disappeared from the Controversy soon after Nicaea and only surfaced again in the 350s. But the term homoousios relates directly to the question of whether the Son is a distinct Person:

If the Father and Son are a single Person, then they are one substance (homoousios). It also follows that the Son, like the Father, is eternal and immutable. These theologians included Tertullian, the Sabellians, Paul of Samosata, Alexander, Athanasius, and the Western Church generally. Show More

But if the Son is a distinct Person, as Origen, Arius, and the Eusebians believed, then the Father alone exists without cause, which implies that the Son’s substance is different from the Father’s. At Nicaea, almost all Eusebians (Arians) accepted the term homoousios but not as meaning ‘same substance’. They had accepted the emperor’s figurative explanation of the term.

Ways of understanding the Bible

The core issue relates to two ways of understanding the Bible:

In the Old Testament, God is one. There is little indication of a second divine Being.

But the New Testament reveals a second divine Being, namely, the Son of God, who is also called ‘I am’ and ‘the First and the Last’, who is God’s Agent in the creation of all things and maintains all things. So, the question arose, how does the Son relate to the Father?

‘One hypostasis’ theology argues from the Old Testament and claims that, since the Old Testament asserts only one divine Being, the ‘Father’ and ‘Son’ must be one Person.

Three hypostases’ theology accepts the evidence from the New Testament that the Son is indeed a distinct divine Person. It identifies three divine Persons (three hypostases): the Father, Son, and Holy Spirit.


Overview

The fourth-century Controversy continued the controversy of the preceding century, which was mainly between Sabellius’ one-hypostasis theology, which adopted the term homoousios, and Origen’s three hypostases, which rejected the term. In that century, Sabellianism was defeated.

However, at Nicaea, through the emperor’s support, a Sabellian ‘one hypostasis’ minority had the upper hand and was able to insert the term homoousios in the Creed, despite the majority’s objections. Emperor Constantine appeased the majority’s fears by explaining the terms ousia and homoousios highly figuratively, saying that it only means that the Son is truly from the Father. This enabled the Eusebian majority to accept the Creed.

After Nicaea, the Sabellians claimed that the term homoousios means that the church had accepted a one-hypostasis theology. This caused a few years of intense strife during which all leading Sabellians were exiled.

After that, nobody mentioned homoousios for more than two decades. For example, neither Athanasius nor the councils in the 340s mention homoousios. Rather, the focus was now on the more fundamental issue: whether the Son is a distinct Person (a hypostasis).

In the mid-350s, 30 years after Nicaea, Athanasius, who also had a ‘one hypostasis’ theology, brought the term back into the Controversy, causing the Eusebians to divide into three major views with respect to the Son’s substance.

In the 360-370s, Basil of Caesarea, the first Cappadocian father, was the first pro-Nicene to explain homoousios as three hypostases. This caused some fierce conflict between Basil and Athanasius.

In the end, the church was divided into at least the following factions:

Western pro-Nicenes defended homoousios and explained it as saying that Father and Son are a single hypostasis (one Person). (For example, at the Council of Serdica)

Eastern pro-Nicenes (the Cappadocians) also accepted homoousios but interpreted it in a generic sense, meaning three distinct but equal hypostases (see here).

Homoians Eusebians, who dominated the church for much of the 350s to 370s, rejected all talk of God’s substance, including the term homoousios (see here).

Homoiousian Eusebians claimed that the Son’s substance is similar to the Father’s, but not the same (see here).

Heterousian Eusebians taught that the Son’s substance is different from the Father’s.

In the year 380, Emperor Theodosius made the Western pro-Nicene view the State Religion of the Roman Empire and destroyed Arianism among the Romans through violent persecution (see here).

However, the other European nations remained ‘Arians.’ Consequently, after these other nations had taken control of the Western Empre in the fifth century, and divided it into various Arian kingdoms, Europe was Arian once again.

In the sixth century, the Eastern Emperor Justinian subjected the Arian kingdoms and set up the Byzantine Papacy, a system through which the Eastern Empire ruled the West through the Papacy. This continued for two centuries. During this period, the dominance of the Eastern Empire and the Roman Church converted all the Arian kingdoms to Nicene theology.

After the influence of the Eastern Empire dwindled in the West in the 8th century, the Roman Church managed to survive as a distinct organization and grew in power to become the Church of the Middle Ages. 

In conclusion, throughout the Controversy, the only people who regarded homoousios as saying that Father and Son are one substance, as the Trinity doctrine also claims, were the one-hypostasis (Sabellian) theologians. In reality, the Trinity doctrine continues ancient Sabellianism. (See here for a discussion of the Trinity doctrine.)


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Homoousios was not regarded as important at Nicaea.

INTRODUCTION

Purpose

The Nicene Creed of AD 325 states that the Son is homoousios (of the same substance as) the Father. In the traditional account of the Arian Controversy, this term is the key word of the Creed.  Show More

However, soon after Nicaea, it disappeared from the debate. For more than 20 years, nobody mentioned it, not even Athanasius, the great hero of the Arian Controversy and defender of the Nicene Creed, nor the Western church, which is often described as the stalwart defender of Nicaea throughout the fourth century.  Show More

It wasn’t until the mid-350s, some 30 years after Nicaea, that Athanasius re-introduced the term into the debate. Only after that did the West slowly begin to defend it and the Eusebians began to attack it. Show More

In other words, it was not regarded as important at Nicaea. Show More

This article explains why it was accepted at Nicaea, why it disappeared from the debate, and why it again became part of the Controversy 30 years later.

This article quotes extensively from leading scholars. Although almost all quotes are hidden in ‘read more’ section, they are a crucial part of this article.

Authors Quoted

Based on discoveries and research over the past century, leading scholars today explain the fourth-century Arian Controversy very differently from scholars in preceding centuries. This article quotes from the main books on the subject from the last 50 years. Show More

WHY INCLUDED

Athanasius claimed that homoousion was inserted in the Creed as an anti-Arian term, namely, to force Arius and his supporters to reject the Creed so that the emperor could exile them. But Hanson says that it was included as a pro-Sabellian term, namely, because the Sabellians preferred it.

It was inserted in the Nicene Creed because Constantine insisted on it. Constantine took Alexander’s part in the dispute. Alexander viewed the Father and Son as a single Person (a single hypostasis). Since the majority of the delegates were from the East, and since the Eastern Church regarded the Son to be a distinct Person, Alexander’s theology was in the minority. For that reason, Alexander allied with the other ‘one hypostasis’ theologians, namely, the Sabellians. This gave the Sabellians much influence in the Council. Since the emperor had taken Alexander’s part, he insisted in the term because the Sabellians preferred it. Show More

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However, although it may be true that homoousios was inserted in the Creed to get Arius exiled, most delegates strongly objected to the concept. As discussed here, the Eusebians opposed the term because it is not Biblical, was borrowed from pagan philosophy, was not part of the standard Christian language of the day, and was already condemned as associated with the heresy of Sabellianism. Furthermore, ‘same substance’ implies that God has a body, which nobody was willing to grant. The Dedication Creed of 341 shows what the majority at Nicaea really believed, when not compelled by an emperor. They opposed both Arius and the term homoousios. The decisions of Nicaea were really the work of a minority.

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More or less the same people who attended Nicaea also attended the Dedication Council 16 years later and the Dedication Creed opposed both Arius and also the term homoousios. So, the Nicene Creed does not reflect die views of the majority: Show More

 


Did Ossius propose the term?

If Ossius, the chairperson, proposed the term, as some think, then it was on instruction of the emperor, for he was the emperor’s agent.

“According to the Arians … the Nicene Creed was presented by Ossius of Cordova in his capacity as president of the assembly.” (P.F. Beatrice) However, Ossius did not preside because of his position in the church. He was the bishop of the “obscure” see of Cordova (Hanson, p. 155). He presided in his capacity “as the Emperor’s representative” (Hanson, p. 154) and represented “the Emperor’s interest.” (Hanson, p. 156) 

The emperor was the final authority.

Given the modern culture of religious freedom, the reader might find it strange that an emperor was able to insist on the inclusion of a keyword in a church creed. However, the Roman Empire was not a democracy and religious freedom did not exist. The empire was ruled by the general who commanded the strongest army. Consequently, the emperors decided which religions were allowed and also acted as the final judge in religious disputes.

“If we ask the question, what was considered to constitute the ultimate authority in doctrine (during the Arian Controversy), there can be only one answer. The will of the Emperor was the final authority.” (Hanson, p. 849)

The so-called ‘ecumenical’ church councils of the fourth century were “the very invention and creation of the Emperor” (Hanson, p. 855). “Everybody recognised the right of an Emperor to call a council, or even to veto or quash its being called” (Hanson, p. 849-50). “The Emperor was expected to dominate and control them” (Hanson, p. 855).

Conclusion

The term was not mentioned for some decades after Nicaea because the Nicene Creed was the work of a minority under the protection of the emperor, while the majority was most uncomfortable with this term.

Nicaea was not regarded as binding.

Furthermore, at the time, the Nicene Creed was not regarded as binding. It was a temporary solution to an immediate problem. 

“Many modern readers assume that the Nicene creed was intended at its promulgation to stand as a binding and universal formula of Christian faith.” (Ayres, p. 85) However, “by the time Nicaea met, Church leaders … had no precedent for the idea of a council that would legislate for the Church as a whole.” (Ayres, p. 87) “Councils were not expected to produce precise statements of belief.” (Ayres, p. 87)

“All the bishops at Nicaea would have understood their local ‘baptismal’ creed to be a sufficient definition of Christian belief.” (Ayres, p. 85)

For a further discussion of this point, see Ayres – 4.1 The Nicene Creed as a Standard of Faith.

HOW WAS HOMOOUSIOS REVIVED?

As stated above, the term homoousios was re-introduced into the Controversy in the 350s; about 30 years after Nicaea. This section explains the history chronologically.

The West was not at Nicaea.

At first, the West was not part of the Controversy. For example, the Westerners at the Council represented a tiny minority.

At Nicaea in 325, “around 250–300 attended, drawn almost entirely from the eastern half of the empire.” (Ayres, p. 19)

“The Westerners at the Council represented a tiny minority.” “The Eastern Church was always the pioneer and leader in theological movements in the early Church.” (Hanson, p. 170)

Post-Nicaea Correction

The inclusion of the term homoousios caused an intense struggle during the years immediately after Nicaea. Sabellians claimed the homoousios in the Creed as a victory for their side but that struggle resulted in the exile of all leading Sabellians. After that, homoousios disappears from the debate. (See here.)

Period of no Controversy

As already mentioned, after the post-Nicaea Correction, the Nicene Creed and Homoousios were not part of the Controversy for more than 25 years. In fact, there was no controversy.

“At some times there was almost no controversy at all. If there was any controversy from 330 to 341, it was a controversy about the behaviour of Athanasius in his see of Alexandria.” (Hanson, p. xviii)

“There was a long period of confusion and uncertainty from 341 to 357 when it was far from clear what the controversy was about, if there was a controversy.” (Hanson, p. xviii)

In other words, the Council of Nicaea brought the dispute between Arius and his bishop Alexander to an end. The Real Controversy began only decades later:

Athanasius’ Polemical Strategy

After he was exiled in 335, Athanasius developed a masterful polemical strategy to explain why he was exiled. He claimed that:

      • Arius developed a novel heresy.
      • He (Athanasius) represents scriptural orthodoxy.
      • He was exiled for his opposition to Arianism.
      • An Arian Conspiracy manipulated the council of Tyre to exile him for violence, of which he was innocent.
      • His opponents are ‘Arians’, meaning followers of Arius’ condemned theology.

None of these points are true but the important point for the current article is that homoousios was not yet part of his polemical strategy.

During those decades after Nicaea, while nobody thinks about homoousios, Athanasius and Marcellus were both exiled from the East and sent to the West (Rome). There they met and joined forces against the East:

“Athanasius and Marcellus now seem to have made common cause against those who insisted on distinct hypostases in God.” (Ayres, p. 106)

In Rome, Athanasius developed his polemical strategy:

“Athanasius’ engagement with Marcellus in Rome seems to have encouraged Athanasius towards the development of” “an increasingly sophisticated account of his enemies;” “the full flowering of a polemical strategy that was to shape accounts of the fourth century for over 1,500 years;” “a masterpiece of the rhetorical art.” (Ayres, p. 106-7)

What was his polemical strategy?

“Athanasius’ account begins by presenting Arius as the originator of a new heresy.” (Ayres, p. 107) In contrast, “Athanasius presents himself as the preserver of the one theological tradition that is equivalent with scriptural orthodoxy.” (Ayres, p. 107)

Athanasius described “his enemies as ‘Arians’ seeking to perpetuate a theology stemming from Arius.” (Ayres, p. 106) “To this end Athanasius quotes extensively from Arius’ Thalia.” (Ayres, p. 107) See also – Athanasius invented Arianism.

This polemical strategy is discussed further in – The Creation of ‘Arianism’. It presents a misleading picture of that Controversy:

“If Athanasius’ account does shape our understanding, we risk misconceiving the nature of the fourth-century crisis.” (Williams, p. 234)

“Once we begin to grasp the problems with Athanasius’ rhetorical unmasking of ‘Arians’ then we need to look beyond the Athanasian terminology of an ‘Arian’ conspiracy to get a more accurate sense of how to understand non-Marcellan and non-Athanasian eastern theologies during this period.” (Ayres, p. 432)

Rome accepted Athanasius.

Using his polemical strategy, Athanasius appealed to the bishop of Rome. The bishop accepted his version of reality, called a council, and vindicated both him and Marcellus.

The subsequent events are described in more detail here. In brief:

“Athanasius appealed to Julius of Rome in 339–40 by using his strategy of narrating a theological conspiracy of ‘Arians’. His success had a profound impact on the next few years of the controversy.” (Ayres, p. 108)

Julius of Rome held a council in Rome which “quickly vindicated Marcellus and Athanasius.” (Ayres, p. 109)

“Julius wrote to the east in 341 in a letter which shows the strong influence of the emerging Athanasian account of ‘Arianism’.” (Ayres, p. 109)

Caused division between East and West

It is traditionally thought that the West had always supported Nicaea. In reality, similar to the East, most in the West believed that the Father, the Son, and the Holy Spirit are three distinct Beings. However, after the West had declared Athanasius and Marcellus orthodox, cracks in that unity began to appear. That was the real beginning of the ‘Arian’ Controversy.

In Ayres’ discussion of the Western (Latin) Theologists at the time of Nicaea, he concludes that they believed more or less the same as the theologians in the East:

“These Latin theologians have as far to travel towards later pro-Nicene theology as the eastern trajectories.” (Ayres, p. 75)

“Ironically, an anti-monarchian, anti-‘modalist’ polemic fundamentally shapes these early Latin theologians, and that is taken so often to be determining the future course of a unitary western theology!” (Ayres, p. 74)

This last quote says that the West opposed the idea that the Father, the Son, and the Holy Spirit are one Being.

So, around the time of Nicaea, there was harmony between East and West. It was the West’s acceptance of Athanasius’ polemical strategy that first caused division between East and West:

“Once Julius had acted we begin to see divisions between the Church in the eastern and western halves of the empire emerging.” (Ayres, p. 109)

This, in the early 340s, was the real beginning of the ‘Arian’ Controversy. However, the bishop of Rome’s acceptance of Athanasius’ strategy did not mean that the entire West accepted it.

“We should … be cautious in our reading of these divisions. The divisions we initially observe are between one group of eastern bishops taking their lead from Eusebius of Nicomedia and Julius and his immediate associates. We must be wary of reading this as reflecting a simple division between eastern and western theology. Even when just such a division appears to come clearly into the open at the Council of Serdica in 343, even there the participants cannot usefully be divided in purely geographic terms.” (Ayres, p. 109-110)

Constantius strived for unity.

In the 340s, while the empire remained divided East and West, the division between the church in the East and West remained. However, after Constantius became emperor of the entire empire in the early 350s, he attempted to get the Western church to agree to the key eastern decisions of the previous few years.

In the same year that Julius wrote his letter to the East (AD 341), the East formulated the Dedication Creed which says that the Father, Son, and Spirit “are three in hypostasis but one in agreement.” Two years later, in 343, the West formulated a Manifesto at Serdica which “opted clearly for Una substantia meaning one hypostasis.” (Hanson, p. 201) There-after. the Western and Eastern churches continued to oppose one another. Since they were ruled by different emperors, there was little incentive to reconcile these opposing views.

However, in the early 350s, Constantius became emperor of the entire Roman Empire:

“Over the period AD 351–3, and after a complex civil war, the eastern Emperor Constantius achieved complete control of the whole empire.” (Ayres, p. 133)

“At this point Constantius found himself sole ruler of the Roman world and with the ability to push for a unified religious policy throughout his domains in a way no emperor had been able to do since the death of his father in 337.” (Ayres, p. 133)

He attempted to get the Western church to agree to the eastern Creeds:

“As his control over the west grew Constantius increased his attempts to get bishops to agree to the key eastern decisions of the previous few years.” (Ayres, p. 135)

“Through the 350s … we seem to see a growing opposition to Constantius’ attempts to force western councils to agree to the decrees of Sirmium 351.” (Ayres, p. 136)

He attempted to isolate Athanasius.

Since Constantius’ greatest enemy, both politically and in the church, was Athanasius, his primary goal was to isolate Athanasius.

“Athanasius had a desire for power; he suppressed ruthlessly whenever he could any opposition to him within his diocese … towards the end of his life he had reached a position in which his power (in Egypt), not only ecclesiastical but also political, was virtually beyond challenge.” (Hanson, p. 421)

Therefore, the emperor “attempted to get the condemnation of Athanasius and probably some sort of theological statement accepted throughout the west.” (Ayres, p. 135) With that double goal in mind, “the council of Sirmium in 351 set the trend for a series of councils.” (Ayres, p. 135) For here for a discussion of the Creed of 351.

Athanasius re-introduced Homoousios.

In response to the emperor’s attack on him, Athanasius incorporated homoousios into his polemical strategy, which was the basis for the schism between the East and West. Therefore, homoousios became part of the dispute. As argued above, that was in the mid-350s.

“He began to use it [homoousios] first in the De Deeretis and thereafter regularly in his theological works, defending it fiercely against all criticism of it. If we place De Deeretis in 356 or 357, we can perhaps see the reason for this change of policy. By then it had become abundantly clear not only that Constantius was everywhere trying to isolate Athanasius himself from ecclesiastical support both in the East and the West … Athanasius decided that he must begin a policy of defending the very words of N as a slogan or banner round which to gather.” (Hanson, p. 438)

It was a turn to Nicaea.

Athanasius and the West did not oppose Constantius because they defended Nicaea. Rather, they turned to Nicaea to strengthen their resistance to the emperor’s efforts.

“It seems unlikely that previous adherence to Nicaea motivated their (the West’s) growing opposition (to Constantius’ efforts): it is much more likely that events in the second half of the decade prompted a turn to Nicaea as a focus for their already strong opposition.” (Ayres, p. 136)

In the ‘West’ there were, already before 357, “the beginnings of attempts on the part of a few to turn to Nicaea as a standard against the direction of Constantius’ policies.” (Ayres, p. 139)

Anti-Nicene Accounts Emerged.

As stated above, anti-Nicene theologies, particularly Homoianism, emerged in the late 350s; only after Athanasius introduced homoousios into his polemical strategy.

For example, Homoian theology is specifically anti-Nicene. Particularly, it opposes ousia-language. For example, they were “refusing to allow ousia-terms of any kind into professions of faith.” (Williams, p. 234) It appeared only in the 350s:

“Though Homoian Arianism derived from the thought both of Eusebius of Caesarea and of Arius, we cannot with confidence detect it before the year 357, when it appears in the Second Sirmian Creed.” (Hanson, p. 558)

“Many of the theologies we have considered so far are non-Nicene more than anti-Nicene: only in the 350s do we begin to trace clearly the emergence of directly anti-Nicene accounts.” (Ayres, p. 139)

Homoousios divided the church.

As a result of the introduction of homoousios into the Controversy, the church divided into various factions. Those who accepted homoousios were divided between one-hypostasis and three-hypostases views. Those who rejected homoousios were divided between those who rejected all ousia (substance) language and those who did use the term in their theologies.

One-hypostasis Homo-ousians (Sabellians), such as Athanasius and Marcellus, interpreted homoousios as “one substance,” namely, as saying that Father and Son are one Being. See above the Council of Serdica in 343, where the Western delegates asserted ‘one hypostasis’.

Three-hypostases Homo-ousians, such as Basil of Caesarea and Meletius of Antioch, interpreted homoousios as “same substance,” namely, that Father and Son are two beings with the same type of substance. (See – Basil.)

The Homoi-ousians (from ὅμοιος, hómoios, “similar”) maintained that the Son’s substance is like the Father’s, but not the same.

The Heter-ousians said that the Son is like the Father but His substance is unlike the Father’s.

The Homo-ians, who remained the dominant emperor-supported faction, rejected all use of ousia-terms. They held that Jesus Christ is like the Father, without referencing ousia (essence or substance).


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