Deuteronomy 19:16-19

16If an unrighteous witness rise up against any man to testify against him of wrong-doing, 17then both the men, between whom the controversy is, shall stand before Jehovah, before the priests and the judges that shall be in those days; 18and the judges shall make diligent inquisition: and, behold, if the witness be a false witness, and have testified falsely against his brother; 19then shall ye do unto him, as he had thought to do unto his brother: so shalt thou put away the evil from the midst of thee.