2 Samuel 18:1-4

1David mustered the men who were with him and appointed over them commanders of thousands and commanders of hundreds.

2David 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.”

3But 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.”

4The king answered, “I will do whatever seems best to you.” So the king stood beside the gate while all his men marched out in units of hundreds and of thousands.