1 Chronicles 18:12-17

12 Moreover Abishaia the son of Zeruiah slew of the Edomites in the valley of salt eighteen* thousand.
13 And he put garrisons in Edom; and all the Edomites became David's servants. Thus the LORD preserved David whithersoever he went.
14 So David reigned over all Israel, and executed judgment and justice among all his people.
15 And Joab the son of Zeruiah was over the host; and Jehoshaphat the son of Ahilud, recorder.b
16 And Zadok the son of Ahitub, and Abimelechc the son of Abiathar, were the priests; and Shavsha was scribe;
17 And Benaiah the son of Jehoiada was over the Cherethites and the Pelethites; and the sons of David were chief aboutd the king.