Revelation 1:18; Revelation 3:7; Revelation 9:1; Revelation 20:1

Revelation 1:18

18 I am the Living One; I was dead, and now look, I am alive for ever and ever! And I hold the keys of death and Hades.

Revelation 3:7

7 “To the angel of the church in Philadelphia write: These are the words of him who is holy and true, who holds the key of David. What he opens no one can shut, and what he shuts no one can open.

Revelation 9:1

1 The fifth angel sounded his trumpet, and I saw a star that had fallen from the sky to the earth. The star was given the key to the shaft of the Abyss.

Revelation 20:1

1 And I saw an angel coming down out of heaven, having the key to the Abyss and holding in his hand a great chain.