Revelation 20:1
I saw an angel coming down out of heaven, having the key of the abyss and a great chain in his hand.
Revelation 1:18
and the Living one. I was dead, and behold, I am alive forevermore. Amen. I have the keys of Death and of Hades.
Revelation 10:1
I saw a mighty angel coming down out of the sky, clothed with a cloud. A rainbow was on his head. His face was like the sun, and his feet like pillars of fire.
Luke 8:31
They begged him that he would not command them to go into the abyss.
2 Peter 2:4
For if God didn't spare angels when they sinned, but cast them down to Tartarus, and committed them to pits of darkness, to be reserved for judgment;
Jude 1:6
Angels who didn't keep their first domain, but deserted their own dwelling place, he has kept in everlasting bonds under darkness for the judgment of the great day.
Revelation 9:1-2
The fifth angel sounded, and I saw a star from the sky which had fallen to the earth. The key to the pit of the abyss was given to him.
Revelation 18:1
After these things, I saw another angel coming down out of the sky, having great authority. The earth was illuminated with his glory.