2 Samuel 15:18-22

Now all his servants passed on beside him, all the Cherethites, all the Pelethites and all the Gittites, six hundred men who had come with him from Gath, passed on before the king. Then the king said to Ittai the Gittite, “Why will you also go with us? Return and remain with the king, for you are a foreigner and also an exile; return to your own place. You came only yesterday, and shall I today make you wander with us, while I go where I will? Return and take back your brothers; mercy and truth be with you.” But Ittai answered the king and said, “As the LORD lives, and as my lord the king lives, surely wherever my lord the king may be, whether for death or for life, there also your servant will be.” Therefore David said to Ittai, “Go and pass over.” So Ittai the Gittite passed over with all his men and all the little ones who were with him.