Deuteronomy 17:11-12

11According to the sentence of the law which they shall teach thee, and according to the judgment which they shall tell thee, thou shalt do: thou shalt not decline from the sentence which they shall show thee, to the right hand, nor to the left. 12And the man that will do presumptuously, and will not hearken to the priest that standeth to minister there before the LORD thy God, or to the judge, even that man shall die: and thou shalt remove the evil from Israel.1