1 Chronicles 19:10-13

Joab 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. He put the rest of the men under the command of Abishai his brother, and they were deployed against the Ammonites. Joab said, “If the Arameans are too strong for me, then you are to rescue me; but if the Ammonites are too strong for you, then I will rescue you. Be 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.”