1 And I saw an angel come down from heaven, having the key of the abyss, and a great chain in hit hand.
Revelation 20:1 Cross References - Whiston
Luke 8:31
31 And They besought [him] that he would not command them to go out into the abys.
2 Peter 2:4
4 For if God spared not the angels that sinned, but cast [them] down to Tartarus, and delivered [them] into chains [and] darknesses to be reserved to be punished;
Jude 1:6
6 But the angels who kept not their first estate, but left their own habitation, he hath reserved everlasting chains under darkness, unto the judgment of the great day.
Revelation 1:18
18 He that liveth, and was dead; and behold, I am alive for evermore; and have the keys of hades and of death.
Revelation 9:1-2
1 And the fifth angel sounded, and I saw a star fall front heaven unto the earth: and to him was given the key of the pit of the abyss.
2 And he opened the pit of the abyss, and there arose a smoke out of the pit, the smoke of a great furnace; and the sun and the air were darkned, by reason of the smoke of the pit.
Revelation 10:1
1 And I saw another mighty angel come down from heaven, clothed with a cloud, and a rainbow upon his head, and his face as it were the sun, and his feet as pillars of fire.
Revelation 18:1
1 After these things I saw another angel come down from heaven, having great power; and the earth was lightned with his glory.