Deuteronomy 19:16-21

Thomson(i) 16 And if a false witness rise up against a man, and accuse him of any crime, 17 the two men between whom is the controversy, shall stand before the Lord, and before the priests, and before the judges, who may be in those days. 18 And when the judges have made a strict examination, if the false witness hath testified falsehoods, and risen up against his brother; 19 you shall do to him as he wickedly thought to do to his brother. thou shalt remove the evil from among you; 20 and the rest, when they hear, will be afraid, and thenceforth proceed no more to commit such evil among you. 21 Thine eye shall not pity him; life for life; eye for eye; tooth for tooth; hand for hand; foot for foot.