10 and thou shalt do according to the tenor of the word, which they of that place which Jehovah will choose shall declare unto thee; and thou shalt take heed to do according to all that they instruct thee:

Matthew Henry's Commentary on Deuteronomy 17:10

Commentary on Deuteronomy 17:8-13

(Read Deuteronomy 17:8-13)

Courts of judgment were to be set up in every city. Though their judgment had not the Divine authority of an oracle, it was the judgment of wise, prudent, experienced men, and had the advantage of a Divine promise.