Revelation 20:1

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

Revelation 1:18

And I was dead, and see, I am living for ever, and I have the keys of death and of Hell.

Revelation 10:1

And I saw another strong angel coming down out of heaven, clothed with a cloud; and an arch of coloured light was round his head, and his face was like the sun, and his feet like pillars of fire;

Luke 8:31

And they made a request to him that he would not give them an order to go away into the deep.

2 Peter 2:4

For if God did not have pity for the angels who did evil, but sent them down into hell, to be kept in chains of eternal night till they were judged;

Jude 1:6

And the angels who did not keep to their kingdom but went out from the place which was theirs, he has put in eternal chains and in dark night till the great day of the judging.

Revelation 9:1-2

And at the sounding of the fifth angel I saw a star falling from heaven to the earth: and there was given to him the key of the great deep.

Revelation 18:1

After these things I saw another angel coming down out of heaven, having great authority; and the earth was bright 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 strong angel coming down out of heaven, clothed with a cloud; and an arch of coloured light was round his head, and his face was like the sun, and his feet like pillars of fire;
Revelation 18:1
After these things I saw another angel coming down out of heaven, having great authority; and the earth was bright with his glory.

Having

Revelation 1:18
And I was dead, and see, I am living for ever, and I have the keys of death and of Hell.
Revelation 9:1
And at the sounding of the fifth angel I saw a star falling from heaven to the earth: and there was given to him the key of the great deep.
Luke 8:31
And they made a request to him that he would not give them an order to go away into the deep.

A great

2 Peter 2:4
For if God did not have pity for the angels who did evil, but sent them down into hell, to be kept in chains of eternal night till they were judged;
Jude 1:6
And the angels who did not keep to their kingdom but went out from the place which was theirs, he has put in eternal chains and in dark night till the great day of the judging.

General references

Matthew 8:31
And the evil spirits made strong prayers to him, saying, If you send us out, let us go into the herd of pigs.
Matthew 12:29
Or how may one go into a strong man's house and take his goods, if he does not first put cords round the strong man? and then he may take his goods.
Mark 3:27
But no one is able to go into the house of the strong man and take his goods, without first putting cords round the strong man, and then he will take his goods.
Luke 11:22
But when one who is stronger makes an attack on him and overcomes him, he takes away his instruments of war, in which he had put his faith, and makes division of his goods.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain