And, behold, Amariah the chief priest is over you in all matters of the LORD; and Zebadiah the son of Ishmael, the ruler of the house of Judah, for all the king's matters: also the Levites shall be officers before you. Deal courageously, and the LORD shall be with the good. Behold, Amariah - Here was a two-fold jurisdiction, ecclesiastical and civil: in the ecclesiastical court, Amariah the high-priest was supreme judge, in the civil court, Zebadiah was supreme. To assist both the Levites were a sort of counsellors.
Without good and wholesome laws, no nation can be prosperous: and vain are the best laws if they be not judiciously and conscientiously administered. The things of God and the things of the King should never be confounded in the administration of justice. Amariah the priest, and Zebadiah the ruler, should ever have their distinct places of jurisdiction.
Commentary on the Bible, by Adam Clarke [1831].