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 am alive, and was dead. And behold I am alive for evermore, and have the keys of hell and of death.

Revelation 10:1

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

Luke 8:31

And they besought him, that he would not command them to go out into the deep.

2 Peter 2:4

For if God spared not the angels that sinned, but cast them down into hell, and delivered them in chains of darkness, to be kept unto judgement;

Jude 1:6

The angels also, which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day:

Revelation 9:1-2

And the fifth angel blew, 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 that I saw another angel come from heaven, having great power, and the earth was lightened with his brightness.

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 come down from heaven, clothed with a cloud, and the rainbow upon his head. And his face as it were the sun, and his feet as it were pillars of fire;
Revelation 18:1
And after that I saw another angel come from heaven, having great power, and the earth was lightened with his brightness.

Having

Revelation 1:18
and am alive, and was dead. And behold I am alive for evermore, and have the keys of hell and of death.
Revelation 9:1
And the fifth angel blew, and I saw a star fall from heaven unto the earth. And to him was given the key of the bottomless pit.
Luke 8:31
And they besought him, that he would not command them to go out into the deep.

A great

2 Peter 2:4
For if God spared not the angels that sinned, but cast them down into hell, and delivered them in chains of darkness, to be kept unto judgement;
Jude 1:6
The angels also, which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day:

General references

Matthew 8:31
Then the devils besought him saying, "If thou cast us out, suffer us to go our way into the herd of swine."
Matthew 12:29
Either how can a man enter into a strong man's house, and violently take away his goods, except he first bind the strong man, and then spoil his house?
Mark 3:27
No man can enter into a strong man's house, and take away his goods, except he first bind that strong man and then spoil his house.
Luke 11:22
But when a stronger than he cometh upon him, and overcometh him: he taketh from him, his harness, wherein he trusted, and divideth his goods.