Deuteronomy 19:16-19

16If a false witness testifies against another person and accuses him of a crime,

17then both parties to the controversy must stand before the Lord, that is, before the priests and judges who will be in office in those days.

18The judges will thoroughly investigate the matter, and if the witness should prove to be false and to have given false testimony against the accused,

19you must do to him what he had intended to do to the accused. In this way you will purge evil from among you.