1 Chronicles 19:14-19

14So Joab and his troops advanced to fight the Arameans, who fled before him. 15When the Ammonites saw that the Arameans had fled, they too fled before Joab’s brother Abishai, and they entered the city. So Joab went back to Jerusalem.

16When the Arameans saw that they had been defeated by Israel, they sent messengers to bring more Arameans from beyond the Euphrates,1 with Shophach2 the commander of Hadadezer’s army leading them.

17When this was reported to David, he gathered all Israel, crossed the Jordan, advanced toward the Arameans, and arrayed for battle against them. When David lined up to engage them in battle, they fought against him. 18But the Arameans fled before Israel, and David killed seven thousand of their charioteers and forty thousand foot soldiers. He also killed Shophach the commander of their army.

19When Hadadezer’s subjects saw that they had been defeated by Israel, they made peace with David and became subject to him. So the Arameans were unwilling to help the Ammonites anymore.