Deuteronomy 17:5-8

5Then shalt thou bring forth to thy gates that man or that woman, who have committed that wicked thing, even that man or that woman, and shalt stone them with stones, till they die. 6At the mouth of two witnesses, or three witnesses, shall he that is worthy of death be put to death; but at the mouth of one witness he shall not be put to death. 7The hands of the witnesses shall be first upon him to put him to death, and afterward the hands of all the people. So thou shalt remove the evil from among you.

8If there shall arise a matter too hard for thee in judgment, between blood and blood, between plea and plea, and between stroke and stroke, being matters of controversy within thy gates: then shalt thou arise, and go up to the place which the LORD thy God shall choose;