2 Samuel 10:8-14

8The Ammonites came out and drew up in battle formation at the entrance of their city gate, while the Arameans of Zobah and Rehob and the men of Tob and Maakah were by themselves in the open country. 9Joab saw that there were battle lines in front of him and behind him; so he selected some of the best troops in Israel and deployed them against the Arameans. 10He put the rest of the men under the command of Abishai his brother and deployed them against the Ammonites. 11Joab said, “If the Arameans are too strong for me, then you are to come to my rescue; but if the Ammonites are too strong for you, then I will come to rescue you. 12Be strong, and let us fight bravely for our people and the cities of our God. The Lord will do what is good in his sight.” 13Then Joab and the troops with him advanced to fight the Arameans, and they fled before him. 14When the Ammonites realized that the Arameans were fleeing, they fled before Abishai and went inside the city. So Joab returned from fighting the Ammonites and came to Jerusalem.