Deuteronomy 17:8-11

If there 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 get thee up unto the place which Jehovah thy God shall choose; and thou shalt come unto the priests the Levites, and unto the judge that shall be in those days: and thou shalt inquire; and they shall show thee the sentence of judgment. And thou shalt do according to the tenor of the sentence which they shall show thee from that place which Jehovah shall choose; and thou shalt observe to do according to all that they shall teach thee: according to the tenor of the law which they shall teach thee, and according to the judgment which they shall tell thee, thou shalt do; thou shalt not turn aside from the sentence which they shall show thee, to the right hand, nor to the left.