2 Samuel 10:8-14

10:8 The Ammonites marched out and were deployed for battle at the entrance of the city gate, while the men from Aram Zobah, Rehob, Ish-tob, and Maacah were by themselves in the field.

10:9 When Joab saw that the battle would be fought on two fronts, he chose some of Israel’s best men and deployed them against the Arameans. 10:10 He put his brother Abishai in charge of the rest of the army and they were deployed against the Ammonites. 10:11 Joab said, “If the Arameans start to overpower me, you come to my rescue. If the Ammonites start to overpower you, I will come to your rescue. 10:12 Be strong! Let’s fight bravely for the sake of our people and the cities of our God! The Lord will do what he decides is best!”

10:13 So Joab and his men marched out to do battle with the Arameans, and they fled before him. 10:14 When the Ammonites saw the Arameans flee, they fled before his brother Abishai and went into the city. Joab withdrew from fighting the Ammonites and returned to Jerusalem.