Azazel is documented in the Book of Jubilees. While it is not canon, it does depict the understanding as to who "Azazel" is back in the day. In fact, historical documents all seem to agree on the nature and role "Azazel" had, both historically and prophetically. It is only recently that understanding has been challenged. I lean on this historical and prophetic meaning and believe Satan will fulfill it at the Anti-Church temple declaring himself to be God. At that time, Satan is both the great imitator, and before the congregation, when God will lay all the blame on his shoulders in judgment after the great Yom Kippur when all the children of God have been cleansed of their sins once and for all.
The Seventh Trumpet
15 The seventh angel sounded his trumpet, and there were loud voices in heaven, which said:
“
The kingdom of the world has become
the kingdom of our Lord and of his Messiah,
and he will reign for ever and ever.
16 And the twenty-four elders, who were seated on their thrones before God, fell on their faces and worshiped God, 17 saying:
“We give thanks to you, Lord God Almighty,
the One who is and who was,
because you have taken your great power
and have begun to reign.
18
The nations were angry,
and your wrath has come.
The time has come for judging the dead,
and for rewarding your servants the prophets
and your people who revere your name,
both great and small
and for destroying those who destroy the earth.”
Revelation 11:19
Then God’s
temple in
heaven was
opened, and within his
temple was seen the ark of his covenant. And there came flashes of lightning, rumblings, peals of thunder, an earthquake and a severe hailstorm.
Seven Angels With Seven Plagues
15 I saw in heaven another great and marvelous sign: seven angels with the seven last plagues—last, because with them God’s wrath is completed. 2 And I saw what looked like a sea of glass glowing with fire and, standing beside the sea, those who had been victorious over the beast and its image and over the number of its name. They held harps given them by God 3 and sang the song of God’s servant Moses and of the Lamb:
“Great and marvelous are your deeds,
Lord God Almighty.
Just and true are your ways,
King of the nations.
4 Who will not fear you, Lord,
and bring glory to your name?
For you alone are holy.
All nations will come
and worship before you,
for your righteous acts have been revealed.
Revelation 15:5
After this I looked, and I saw in
heaven the
temple—that is, the tabernacle of the covenant law—and it was
opened.
No judgment comes before the Law is revealed laying out exactly what are the Laws that will be used in the court of God. Yom Kippur has two parts, that which is the final cleansing and forgiveness which the goat for God will be sacrificed for and then the final judgement of who is ultimately responsible for the sins. It is fitting that at the pinnacle of Satan's glorious moment, that judgment is pronounced over his head.
2 Thessalonians 2:4
He will oppose and will exalt himself
over everything that is called God or is worshiped, so that he sets himself up in
God’s
temple, proclaiming himself to be
God.