2 Samuel 8:13-18

And David gat him a name when he returned from smiting of the Syrians in the valley of salt, being eighteen thousand men. And he put garrisons in Edom; throughout all Edom put he garrisons, and all they of Edom became David's servants. And the LORD preserved David whithersoever he went. And David reigned over all Israel; and David executed judgment and justice unto all his people. And Joab the son of Zeruiah was over the host; and Jehoshaphat the son of Ahilud was recorder; and Zadok the son of Ahitub, and Ahimelech the son of Abiathar, were the priests; and Seraiah was the scribe; and Benaiah the son of Jehoiada was over both the Cherethites and the Pelethites; and David's sons were chief rulers.