11 according to the sentence of the law which they shall declare unto thee, and according to the judgment which they shall tell thee, thou shalt do: thou shalt not decline from the word which they shall declare unto thee, to the right hand, or the left.

Matthew Henry's Commentary on Deuteronomy 17:11

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.