2 Samuel 10:10-14

10He left the rest of the army under the command of his brother Abishai, who was to attack the Ammonites.

11“If the Arameans are too strong for me, then come over and help me,” Joab told his brother. “And if the Ammonites are too strong for you, I will come and help you.

12Be courageous! Let us fight bravely for our people and the cities of our God. May the Lord’s will be done.”

13When Joab and his troops attacked, the Arameans began to run away.

14And when the Ammonites saw the Arameans running, they ran from Abishai and retreated into the city. After the battle was over, Joab returned to Jerusalem.