2 Samuel 18:1-3

David mustered the men who were with him and appointed over them commanders of thousands and commanders of hundreds. David sent out his troops, a third under the command of Joab, a third under Joab’s brother Abishai son of Zeruiah, and a third under Ittai the Gittite. The king told the troops, “I myself will surely march out with you.” But the men said, “You must not go out; if we are forced to flee, they won’t care about us. Even if half of us die, they won’t care; but you are worth ten thousand of us. It would be better now for you to give us support from the city.”