Moses
Deuteronomy 17:9BSB·traditional attribution

You are to go to the Levitical priests and to the judge who presides at that time. Inquire of them, and they will give you a verdict in the case.

Matthew Henry Presbyterian @wholebiblehenry

Courts of judgment were ordered to be erected in every city (Deu 16:18), and they were empowered to hear and determine causes according to law, both those which we call pleas of the crown and those between party and party; and we may suppose that ordinarily they ended the matters that were brought before them, and their sentence was definitive; but, 1.

Commenting on Deuteronomy 17:8-13

John Gill Reformed Baptist @doctorgill

Thou shalt come unto the priests, the Levites,.... The priests that are of the tribe of Levi, as the Targum of Jonathan, and so Jarchi; for Aben Ezra says there are priests that are not of the genealogy of Levi; such there were indeed in Jeroboam's time, Kg1 12:31.

Jamieson-Fausset-Brown Reformed @jfbcommentary

THE PRIESTS AND JUDGES TO DETERMINE CONTROVERSIES. (Deu 17:8-13) If there arise a matter too hard for thee in judgment--In all civil or criminal cases, where there was any doubt or difficulty in giving a decision, the local magistrates were to submit them by reference to the tribunal of the Sanhedrim--the supreme council, which was composed partly of civil and partly of ecclesiastical persons.

Commenting on Deuteronomy 17:8-13