The cases in question are such as the inferior judges did not feel able to decide satisfactorily, and which accordingly they remitted to their superiors (compare Exodus 18:23-27).
The Supreme court Deuteronomy 17:9 is referred to in very general terms as sitting at the sanctuary Deuteronomy 17:8. “The judge” would no doubt usually be a layman, and thus the court would contain both an ecclesiastical and a civil element. Jehoshaphat 2 Chronicles 19:4-11 organized his judicial system very closely upon the lines here laid down.