Proverbs 24:23-25, 28-29

These also are sayings of the wise. Partiality in judging is not good. Whoever says to the wicked, “You are in the right,” will be cursed by peoples, abhorred by nations, but those who rebuke the wicked will have delight, and a good blessing will come upon them.

Be not a witness against your neighbor without cause, and do not deceive with your lips. Do not say, “I will do to him as he has done to me; I will pay the man back for what he has done.”