2 Samuel 18:1-3

Then David took a count of the people who were with him and appointed over them commanders of thousands and commanders of hundreds.

And David sent the people out, a third under the command of Joab, a third under the command of Abishai the son of Zeruiah, Joab’s brother, and a third under the command of Ittai the Gittite. And the king said to the people, “I myself will certainly go out with you also.”

But the people said, “You should not go out; for if in fact we flee, they will not care about us; and if half of us die, they will not care about us. But you are worth ten thousand of us; so now it is better that you will be ready to help us from the city.”