2 Samuel 8:15-18

David reigned over all Israel, doing what was just and right for all his people. Joab son of Zeruiah was over the army; Jehoshaphat son of Ahilud was recorder; Zadok son of Ahitub and Ahimelek son of Abiathar were priests; Seraiah was secretary; Benaiah son of Jehoiada was over the Kerethites and Pelethites; and David’s sons were priests.