1 THEN I saw an angel descending from heaven with the key of the abyss and a great chain in his hand.
Revelation 20:1 Cross References - Riverside
Luke 8:31
31 They begged him not to bid them go away into the abyss.
2 Peter 2:4
4 For if God did not spare angels that had sinned, but thrust them down to Tartarus and committed them to pits of darkness to be kept for judgment,
Jude 1:6
6 and angels who did not keep their own rank, but left their own abode, he has kept for the judgment of the great day in everlasting chains under blackness of darkness.
Revelation 1:18
18 and the living one. I became dead, but now I am living for the ages of the ages, and I have the keys of death and of Hades.
Revelation 9:1-2
1 THE fifth angel sounded his trumpet and I saw a star that had fallen from heaven to the earth. There was given to him the key of the pit of the abyss.
2 And he opened the pit of the abyss and smoke came up from the pit like the smoke of a great furnace, and the sun was darkened and the air also by the smoke of the pit.
Revelation 10:1
1 THEN I saw another strong angel descending from heaven. He was clothed in a cloud and the rainbow was over 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 power, and the earth was lit up with his splendor.