Revelation 18:6

Give back to her the way [i.e., the kind of treatment] she has given back [to others], and repay her double for what she has done. Mix a double dose for her from her own cup.

Revelation 14:10

he will also [have to] drink the wine of God's anger, as an undiluted mixture in the cup of His anger. And he will be tortured with burning sulphur in the presence of the holy angels and in the presence of the Lamb.

Revelation 16:19

And the great city was split into three parts, and the cities of the nations were destroyed. And God remembered the great Babylon and made her drink from the cup of wine of His fierce anger.

Revelation 17:4

And the woman was dressed in purple and red [clothing], and was adorned with gold [jewelry] and precious stones and pearls. In her hand she held a golden cup full of disgusting things and of the pollutions of her sexual immorality.

2 Timothy 4:14

Alexander the metal worker did me much harm; the Lord will repay him for what he did.

Revelation 13:10

If anyone goes [or "leads others"] into captivity, he will go into captivity [himself]; if anyone is killed [or "kills others"] with the sword, he will be killed with the sword [himself]. Here is [where] God's holy people [need] perseverance and faith.

Revelation 16:5-6

Then I heard the angel [in charge] of the waters saying, "You are just, [you] who are [in the present] and who were [in the past], O Holy One, because you have judged [that these things should happen].

Revelation 17:2

The kings of the earth have committed sexual immorality with her, and those who live on the earth became drunk from [drinking] the wine of her sexual immorality."

Treasury of Scripture Knowledge

Summary

Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double.

General references

Bible References

The cup

Revelation 14:10
he will also [have to] drink the wine of God's anger, as an undiluted mixture in the cup of His anger. And he will be tortured with burning sulphur in the presence of the holy angels and in the presence of the Lamb.
Revelation 16:19
And the great city was split into three parts, and the cities of the nations were destroyed. And God remembered the great Babylon and made her drink from the cup of wine of His fierce anger.
Revelation 17:2
The kings of the earth have committed sexual immorality with her, and those who live on the earth became drunk from [drinking] the wine of her sexual immorality."

General references

Matthew 7:2
For the way you judge [other people] is the way you [yourselves] will be judged. And the standard you use [for dealing] with others is the standard that they [and God] will use on you.