Revelation 20:1
And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.
Revelation 1:18
and he that lives and was dead; and, behold, I am alive for evermore, Amen, and have the keys of Hades and of death.
Revelation 10:1
And I saw another mighty angel come down from heaven, clothed with a cloud; and a rainbow was upon his head, and his face was as the sun, and his feet as pillars of fire:
Luke 8:31
And they besought him that he would not command them to go out into the abyss.
2 Peter 2:4
For if God did not forgive the angels that sinned, but cast them down into the deepest abyss and delivered them into chains of darkness, to be reserved unto judgment;
Jude 1:6
And the angels who did not keep their first estate but left their own habitation, he has reserved in eternal chains under darkness unto the judgment of the great day.
Revelation 9:1-2
And the fifth angel sounded the trumpet, and I saw a star fall from heaven unto the earth; and to him was given the key of the bottomless pit.
Revelation 18:1
And after these things I saw another angel come down from heaven, having great power, and the earth was illuminated with his glory.