Revelation 9:1

And the fifth angel sounded, and I saw a star fallen out of heaven to the earth, and to him was given the key of the pit of the abyss;

Revelation 8:10

And the third angel sounded, and there fell from heaven a great star, burning as a torch, and it fell upon the third part of the rivers, and upon the fountains of waters.

Luke 8:31

And they besought him not to command them to go away into the abyss.

Revelation 1:18

and he that liveth; and I was dead, and behold, I am alive for evermore; and I have the keys of death and the underworld.

Revelation 9:2

and he opened the pit of the abyss. And there went up a smoke out of the pit, as the smoke of a great furnace, and the sun and the air were darkened by reason of the smoke of the pit.

Luke 10:18

And he said to them, I saw Satan fall from heaven like lightning.

Romans 10:7

Or, "Who shall descend into the abyss?" that is, to bring up Christ from the dead.

Revelation 17:8

The beast which thou sawest, was, and is not, and is to come up out of the abyss, and goeth into perdition; and they that dwell on the earth, whose names have not been written in the book of life from the foundation of the world, will wonder, when they see the beast, that he was, and is not, and yet will come.

Revelation 20:1

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

2 Thessalonians 2:3-8

Let no one deceive you in any manner; for [that day will not come] unless the apostasy shall have come first and the man of sin have been revealed, the son of perdition;

2 Timothy 3:1-5

But know this, that in the last days grievous times will come.

Revelation 1:20

the mystery of the seven stars which thou sawest in my right hand, and the seven golden candlesticks. The seven stars are the angels of the seven churches; and the seven candlesticks are the seven churches.

Revelation 8:2

And I saw the seven angels who stand before God; and there were given to them seven trumpets.

Revelation 8:6-8

And the seven angels who had the seven trumpets prepared themselves to sound.

Revelation 8:12

And the fourth angel sounded, and the third part of the sun was smitten, and the third part of the moon, and the third part of the stars, so that the third part of them was darkened, and the day shone not for a third part of it, and the night in like manner.

Revelation 9:11-13

They have over them a king, the angel of the abyss, whose name in the Hebrew tongue is Abaddon, but in the Greek he hath for his name Apollyon.

Revelation 11:14-15

The second woe is past; behold, the third woe cometh quickly.

Revelation 20:10

And the Devil who deceived them was cast into the lake of fire and brimstone, where are also the beast and the false prophet; and they will be tormented day and night for ever and ever.

Treasury of Scripture Knowledge

Summary

And the fifth angel sounded, and I saw a star fall from heaven unto the earth: and to him was given the key of the bottomless pit.

Bible References

The fifth

Revelation 9:12
The first woe is past; behold, two woes more are yet to come.
Revelation 8:6
And the seven angels who had the seven trumpets prepared themselves to sound.
Revelation 11:14
The second woe is past; behold, the third woe cometh quickly.

A star

Revelation 1:20
the mystery of the seven stars which thou sawest in my right hand, and the seven golden candlesticks. The seven stars are the angels of the seven churches; and the seven candlesticks are the seven churches.
Revelation 8:10
And the third angel sounded, and there fell from heaven a great star, burning as a torch, and it fell upon the third part of the rivers, and upon the fountains of waters.
Luke 10:18
And he said to them, I saw Satan fall from heaven like lightning.
2 Thessalonians 2:3
Let no one deceive you in any manner; for [that day will not come] unless the apostasy shall have come first and the man of sin have been revealed, the son of perdition;
2 Timothy 3:1
But know this, that in the last days grievous times will come.

To him

Revelation 1:18
and he that liveth; and I was dead, and behold, I am alive for evermore; and I have the keys of death and the underworld.
Revelation 20:1
And I saw an angel coming down from heaven, having the key of the abyss, and a great chain in his hand.