Revelation 11:7

And when they may finish their testimony, the beast which ascends up out of the bottomless pit will make war against them, and conquer them, and slay them.

Revelation 13:7

And it was given to him to make war with the saints and to conquer them: and authority was given unto him over every tribe, and people, and tongue, and nation.

Revelation 13:11

And I saw another beast coming up out of the earth; and he had two horns like a lamb, and he continued to speak as the dragon.

Luke 13:32

And He said to them, Having gone, tell that fox, Behold, I cast out demons and perfect healings to-day and to-morrow, and on the third day I am made perfect.

John 17:4

I glorified thee upon the earth, having finished the work that thou hast given to me that I may do it.

John 19:30

Then when Jesus received the vinegar, He said, It is finished: and bowing His head, He gave up His spirit.

Acts 20:24

But I consider my life worthy of no consideration to myself, so as to finish my course, and the ministry which I received from the Lord Jesus, to bear testimony to the gospel of the grace of God.

2 Thessalonians 2:8-9

then indeed will the lawless one be revealed, whom the Lord Jesus will remove by the spirit of his mouth, and will exterminate by the brightness of his coming;

2 Timothy 4:7

I have fought a good fight, I have finished my course, I have kept the faith:

Revelation 9:1-2

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

Revelation 11:3

And I will give to my two witnesses, and they shall prophesy a thousand two hundred and sixty days, clothed in sackcloth.

Revelation 13:1-4

And I stood upon the sand of the sea. And I saw a beast rising up out of the sea, having ten horns and seven heads; and upon his horns ten diadems, and upon his heads names of blasphemy.

Revelation 13:16-17

And he causes all, small and great, both rich and poor, both free and bond, that they may give them a mark on their right hand, or on their forehead:

Revelation 17:6-8

And I saw the woman drunken from the blood of the saints, and from the blood of the martyrs of Jesus: and seeing her, I was astonished with great astonishment.

Revelation 19:19-20

And I saw the beast, and the kings of the earth, and their armies, assembled to make war with the one sitting on the horse, and with his army.

Treasury of Scripture Knowledge

Summary

And when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.

Bible References

When

Revelation 11:3
And I will give to my two witnesses, and they shall prophesy a thousand two hundred and sixty days, clothed in sackcloth.
Luke 13:32
And He said to them, Having gone, tell that fox, Behold, I cast out demons and perfect healings to-day and to-morrow, and on the third day I am made perfect.
John 17:4
I glorified thee upon the earth, having finished the work that thou hast given to me that I may do it.
John 19:30
Then when Jesus received the vinegar, He said, It is finished: and bowing His head, He gave up His spirit.
Acts 20:24
But I consider my life worthy of no consideration to myself, so as to finish my course, and the ministry which I received from the Lord Jesus, to bear testimony to the gospel of the grace of God.
2 Timothy 4:7
I have fought a good fight, I have finished my course, I have kept the faith:

The beast

Revelation 13:1
And I stood upon the sand of the sea. And I saw a beast rising up out of the sea, having ten horns and seven heads; and upon his horns ten diadems, and upon his heads names of blasphemy.
Revelation 17:6
And I saw the woman drunken from the blood of the saints, and from the blood of the martyrs of Jesus: and seeing her, I was astonished with great astonishment.
Revelation 19:19
And I saw the beast, and the kings of the earth, and their armies, assembled to make war with the one sitting on the horse, and with his army.
2 Thessalonians 2:8
then indeed will the lawless one be revealed, whom the Lord Jesus will remove by the spirit of his mouth, and will exterminate by the brightness of his coming;

Out

Revelation 9:2
And he opened the pit of the abyss, and smoke came out of the pit, like the smoke of a great furnace; and the sun and the air were darkened from the smoke of the pit.