2 Samuel 15:18-22

And all his servants passed by him, and all the Cherethites, and all the Pelethites, and all the six hundred Gittites who had followed him from Gath, passed on before the king. Then the king said to Ittai the Gittite, “Why do you also go with us? Go back and stay with the king, for you are a foreigner and also an exile from your home. You came only yesterday, and shall I today make you wander about with us, since I go I know not where? Go back and take your brothers with you, and may the LORD show steadfast love and faithfulness to you.” But Ittai answered the king, “As the LORD lives, and as my lord the king lives, wherever my lord the king shall be, whether for death or for life, there also will your servant be.” And David said to Ittai, “Go then, pass on.” So Ittai the Gittite passed on with all his men and all the little ones who were with him.