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