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.
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 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.