Where does the sealing (Revelation 7:1-8) fit in the end-time events?

God’s people will also be sealed DURING AND THROUGH the Revelation 13-crisis in which the image of the beast will force all people to accept the mark of the beast. The plagues will begin to fall when every person will either have the mark of the beast or the seal of God. The seal will protect God’s people during the seven last plagues.