1 Then I saw an angel coming down from heaven with the key to the Abyss, holding in his hand a great chain.
Revelation 20:1 Cross References - BSB
Luke 8:31
31 And the demons kept begging Jesus not to order them to go into the Abyss.
2 Peter 2:4
4 For if God did not spare the angels when they sinned, but cast them deep into hell, placing them in chains of darkness to be held for judgment;
Jude 1:6
6 And the angels who did not stay within their own domain but abandoned their proper dwelling—these He has kept in eternal chains under darkness, bound for judgment on that great day.
Revelation 1:18
18 the Living One. I was dead, and behold, now I am alive forever and ever! And I hold the keys of Death and of Hades.
Revelation 9:1-2
1 Then the fifth angel sounded his trumpet, and I saw a star that had fallen from heaven to earth, and it was given the key to the pit of the Abyss.
2 The star opened the pit of the Abyss, and smoke rose out of it like the smoke of a great furnace, and the sun and the air were darkened by the smoke from the pit.
Revelation 10:1
1 Then I saw another mighty angel coming down from heaven, wrapped in a cloud, with a rainbow above his head. His face was like the sun, and his legs were like pillars of fire.
Revelation 18:1
1 After this I saw another angel descending from heaven with great authority, and the earth was illuminated by his glory.