Deuteronomy 19:16-20

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 the LORD, before the priests and the judges which shall be in those days;

18and the judges shall make diligent inquisition: and, behold, if the witness be a false witness, and hath 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.

20And those which remain shall hear, and fear, and shall henceforth commit no more any such evil in the midst of thee.