II Samuel 8:13-18

And David made himself a name when he returned from killing eighteen thousand Syrians in the Valley of Salt. He also put garrisons in Edom; throughout all Edom he put garrisons, and all the Edomites became David’s servants. And the LORD preserved David wherever he went. So David reigned over all Israel; and David administered judgment and justice to all his people. Joab the son of Zeruiah was over the army; Jehoshaphat the son of Ahilud was recorder; Zadok the son of Ahitub and Ahimelech the son of Abiathar were the priests; Seraiah was the scribe; Benaiah the son of Jehoiada was over both the Cherethites and the Pelethites; and David’s sons were chief ministers.