15A lone witness is not sufficient to establish any wrongdoing or sin against a man, regardless of what offense he may have committed. A matter must be established by the testimony of two or three witnesses.
16If a false witness testifies against someone, accusing him of a crime,
17both parties to the dispute must stand in the presence of the LORD, before the priests and judges who are in office at that time.
18The judges shall investigate thoroughly, and if the witness is proven to be a liar who has falsely accused his brother,
19you must do to him as he intended to do to his brother. So you must purge the evil from among you.
20Then the rest of the people will hear and be afraid, and they will never again do anything so evil among you.
21You must show no pity: life for life, eye for eye, tooth for tooth, hand for hand, and foot for foot.
— Deuteronomy 19:15-21