2 Samuel 15:20

Whereas thou camest but yesterday, having cast his fortunes with David but recently, should I this day make thee go up and down with us? Seeing I go whither I may, return thou, and take back thy brethren; mercy and truth be with thee. Since the lot of David would at best be most uncertain in the near future, he did not want Ittai to share this uncertainty, which partook of the nature of a banishment, but commended him to the grace and faithfulness of God.