2 Samuel 10:7-9

New Revised Standard Version Catholic Edition

⁷ When David heard of it, he sent Joab and all the army with the warriors. ⁸ The Ammonites came out and drew up in battle array at the entrance of the gate; but the Arameans of Zobah and of Rehob, and the men of Tob and Maacah, were by themselves in the open country.

⁹ When Joab saw that the battle was set against him both in front and in the rear, he chose some of the picked men of Israel, and arrayed them against the Arameans;