Deuteronomy 19:16

14Thou shalt not remove thy neighbour’s landmark, which they of old time have set in thine inheritance, which thou shalt inherit in the land that the LORD thy God giveth thee to possess it.

15One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.

16If a false witness rise up against any man to testify against him that which is wrong;

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;