Revelation 20:1
And I saw an angel descending from heaven, holding the key of the abyss and a great chain in his hand.
Revelation 1:18
and the one who lives, and I was dead, and behold, I am living {forever and ever}, and I hold the keys of death and of Hades.
Revelation 10:1
And I saw another powerful angel descending from heaven, wrapped in a cloud, and a rainbow over his head, and his face [was] like the sun, and his feet [were] like pillars of fire,
Luke 8:31
And they began imploring him that he would not order them to depart into the abyss.
2 Peter 2:4
For if God did not spare the angels who sinned, but held [them] captive in Tartarus with chains of darkness [and] handed [them] over to be kept for judgment,
Jude 1:6
And [the] angels who did not keep to their own domain but deserted their proper dwelling place, he has kept in eternal bonds under deep gloom for the judgment of the great day,
Revelation 9:1-2
And the fifth angel blew the trumpet, and I saw a star that had fallen from heaven to the earth, and the key of the shaft of the abyss was given to him.
Revelation 18:1
After these [things] I saw another angel descending from heaven, who had great authority, and the earth was illuminated by his splendor.