Deuteronomy 19:16 MSG

[16] If a hostile witness stands to accuse someone of a wrong, then both parties involved in the quarrel must stand in the Presence of God before the priests and judges who are in office at that time. The judges must conduct a careful investigation; if the witness turns out to be a false witness and has lied against his fellow Israelite, give him the same medicine he intended for the other party. Clean the polluting evil from your company. People will hear of what you’ve done and be impressed; that will put a stop to this kind of evil among you. Don’t feel sorry for the person: It’s life for life, eye for eye, tooth for tooth, hand for hand, foot for foot.