I Chronicles 19:10-13

When Joab saw that the battle line was against him before and behind, he chose some of Israel’s best and put them in battle array against the Syrians. And the rest of the people he put under the command of Abishai his brother, and they set themselves in battle array against the people of Ammon. Then he said, “If the Syrians are too strong for me, then you shall help me; but if the people of Ammon are too strong for you, then I will help you. Be of good courage, and let us be strong for our people and for the cities of our God. And may the LORD do what is good in His sight.”