Deuteronomy 17:11-13

11You are to act according to the instruction they teach you and the judgment they tell you—you must not turn aside from the sentence they tell you, to the right or to the left.

12The man who acts presumptuously by not listening to the kohen who stands to serve there before Adonai your God, or to the judge, that man must die. So you are to purge the evil from Israel.

13Then all the people will hear and be afraid, and not act presumptuously again.