1 Chronicles 12:17-20

David went out to meet them and said to them, “If you have come peacefully to me to help me, my heart shall be united with you; but if you have come to betray me to my adversaries, since there is no violence or wrong in my hands, may the God of our fathers look on [what you are doing] and punish [you].” Then the [Holy] Spirit came on Amasai, who was chief of the thirty, and he said, “We are yours, O David, And with you, O son of Jesse! Peace, peace be to you, And peace be to him who helps you; For your God helps you.” Then David accepted and received them and made them officers of his troops. Some [of the men] of Manasseh also defected to David when he came with the Philistines to go to battle against Saul. But David’s men did not [actually] assist the Philistines, for the lords (governors) of the Philistines after consultation sent him away, saying, “At the cost of our heads he may defect to his master Saul.” [1 Sam 29:2-9] As David went to Ziklag, these men defected to him from Manasseh: Adnah, Jozabad, Jediael, Michael, Jozabad, Elihu, and Zillethai, captains of thousands who belonged to Manasseh.