Revelation 9:1-2; Revelation 9:11; Revelation 11:7; Revelation 17:8; Revelation 20:1; Revelation 20:3
The fifth angel sounded his trumpet, and I saw a star that had fallen from the sky to the earth. The star was given the key to the shaft of the Abyss.
When he opened the Abyss, smoke rose from it like the smoke from a gigantic furnace. The sun and sky were darkened by the smoke from the Abyss.
They had as king over them the angel of the Abyss, whose name in Hebrew is Abaddon and in Greek is Apollyon (that is, Destroyer).
Now when they have finished their testimony, the beast that comes up from the Abyss will attack them, and overpower and kill them.
The beast, which you saw, once was, now is not, and yet will come up out of the Abyss and go to its destruction. The inhabitants of the earth whose names have not been written in the book of life from the creation of the world will be astonished when they see the beast, because it once was, now is not, and yet will come.
And I saw an angel coming down out of heaven, having the key to the Abyss and holding in his hand a great chain.
He threw him into the Abyss, and locked and sealed it over him, to keep him from deceiving the nations anymore until the thousand years were ended. After that, he must be set free for a short time.