Deuteronomy 17:8-11

If cases come before your courts that are too difficult for you to judge—whether bloodshed, lawsuits or assaults—take them to the place the LORD your God will choose. Go to the Levitical priests and to the judge who is in office at that time. Inquire of them and they will give you the verdict. You must act according to the decisions they give you at the place the LORD will choose. Be careful to do everything they instruct you to do. Act according to whatever they teach you and the decisions they give you. Do not turn aside from what they tell you, to the right or to the left.