Deuteronomy 17:8-10

8“If any case is too difficult for you to judge—between one kind of homicide and another, between one kind of lawsuit and another, between one kind of assault and another, being controversial issues in your courts—then you shall arise and go to the place which the Lord your God chooses.

9So you shall come to the Levitical priests or to the judge who is in office at that time, and you shall consult them and they will declare to you the verdict in the case.

10You shall act in accordance with the terms of the verdict which they declare to you from that place which the Lord chooses. You shall be careful to act in accordance with all of their instructions.