Revelation 20:1

And I saw an angel come down from heaven, having the key of the abyss, and a great chain in his hand.

Revelation 1:18

and I am he that lives; and I was dead, and be hold, I am alive from age to age: and I have the keys of hades and of death.

Revelation 10:1

And I saw another mighty angel coming down from heaven, clothed with a cloud; and the rainbow was upon his head, and his face was like the sun, and his feet like pillars of fire.

Luke 8:31

And they be sought him, that he would not command them to -go away into the abyss.

2 Peter 2:4

For if God spared not the angels that sinned, but cast them down to Tartarus, and delivered them over to chains of darkness, to be kept for judgment;

Jude 1:6

The angels also that kept not their own dominion, but left their proper habitation, he has reserved, in eternal chains under darkness, to the judgment of the great day.

Revelation 9:1-2

And the fifth angel sounded; and I saw a star fall from heaven to the earth; and there was given to him the key of the pit of the abyss;

Revelation 18:1

And after these things I saw another angel come down from heaven, having great power; and the earth was lighted with his glory.

Treasury of Scripture Knowledge

Summary

And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.

Bible References

I saw

Revelation 10:1
And I saw another mighty angel coming down from heaven, clothed with a cloud; and the rainbow was upon his head, and his face was like the sun, and his feet like pillars of fire.
Revelation 18:1
And after these things I saw another angel come down from heaven, having great power; and the earth was lighted with his glory.

Having

Revelation 1:18
and I am he that lives; and I was dead, and be hold, I am alive from age to age: and I have the keys of hades and of death.
Revelation 9:1
And the fifth angel sounded; and I saw a star fall from heaven to the earth; and there was given to him the key of the pit of the abyss;
Luke 8:31
And they be sought him, that he would not command them to -go away into the abyss.

A great

2 Peter 2:4
For if God spared not the angels that sinned, but cast them down to Tartarus, and delivered them over to chains of darkness, to be kept for judgment;
Jude 1:6
The angels also that kept not their own dominion, but left their proper habitation, he has reserved, in eternal chains under darkness, to the judgment of the great day.

General references

Matthew 8:31
And the demons besought him, saying: If thou cast us out, permit us to go away into the herd of swine.
Matthew 12:29
Or, how can any one enter the house of the strong man and spoil his goods, unless he first bind the strong man? and then he will plunder his house.
Mark 3:27
No one can enter the house of the strong man, and spoil his goods, unless he first bind the strong man; and then he will plunder his house.
Luke 11:22
but when one stronger than he comes upon him and overcomes him, he takes away all his armor in which he trusted, and divides his spoils.