2 Samuel 15:19-22

19The king said to Ittai the Gittite, “Why should you come along with us? Go back and stay with King Absalom. You are a foreigner, an exile from your homeland.

20You came only yesterday. And today shall I make you wander about with us, when I do not know where I am going? Go back, and take your people with you. May the Lord show you kindness and faithfulness.”

21But Ittai replied to the king, “As surely as the Lord lives, and as my lord the king lives, wherever my lord the king may be, whether it means life or death, there will your servant be.”

22David said to Ittai, “Go ahead, march on.” So Ittai the Gittite marched on with all his men and the families that were with him.