Revelation 20:1

Then I saw an angel coming down from Heaven, with the key of the bottomless pit and a great chain in his hand.

Revelation 1:18

the Everliving. I died, and I am alive for ever and ever. And I hold the keys of the Grave and of the Place of the Dead.

Revelation 10:1

Then I saw another mighty angel, descending from Heaven. His robe was a cloud; over his head was the rainbow; his face was like the sun, and his feet like pillars of fire;

Luke 8:31

And the demons begged Jesus not to order them away into the bottomless pit.

2 Peter 2:4

Remember, God did not spare angels when they sinned, but sent them down to Tartarus, and committed them to caverns of darkness, to be kept under guard for judgment.

Jude 1:6

and that even those angels, who did not keep to their appointed spheres, but left their proper homes, have been kept by him for the judgment of the Great Day in everlasting chains and black darkness.

Revelation 9:1-2

Then the fifth angel blew; and I saw a Star that had fallen upon the earth from the heavens, and to him was given the key of the bottomless pit.

Revelation 18:1

After this I saw another angel, descending from Heaven, invested with great authority; and the earth was illuminated by his splendor.

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
Then I saw another mighty angel, descending from Heaven. His robe was a cloud; over his head was the rainbow; his face was like the sun, and his feet like pillars of fire;
Revelation 18:1
After this I saw another angel, descending from Heaven, invested with great authority; and the earth was illuminated by his splendor.

Having

Revelation 1:18
the Everliving. I died, and I am alive for ever and ever. And I hold the keys of the Grave and of the Place of the Dead.
Revelation 9:1
Then the fifth angel blew; and I saw a Star that had fallen upon the earth from the heavens, and to him was given the key of the bottomless pit.
Luke 8:31
And the demons begged Jesus not to order them away into the bottomless pit.

A great

2 Peter 2:4
Remember, God did not spare angels when they sinned, but sent them down to Tartarus, and committed them to caverns of darkness, to be kept under guard for judgment.
Jude 1:6
and that even those angels, who did not keep to their appointed spheres, but left their proper homes, have been kept by him for the judgment of the Great Day in everlasting chains and black darkness.

General references

Matthew 8:31
And the foul spirits began begging Jesus: "If you drive us out, send us into the drove of pigs."
Matthew 12:29
How, again, can any one get into a strong man's house and carry off his goods, without first securing him? And not till then will he plunder his house.
Mark 3:27
No man who has got into a strong man's house can carry off his goods, without first securing him; and not till then will he plunder his house.
Luke 11:22
But, when one still stronger has attacked and overpowered him, he takes away all the weapons on which the other had relied, and divides his spoil.