1 Samuel 12:21-25

21and turn ye not aside; for [it would be] after vain things which cannot profit nor deliver; for they are vain. 22For Jehovah will not cast away his people for his great name's sake; because it has pleased Jehovah to make you his people. 23Moreover, as for me, far be it from me that I should sin against Jehovah in ceasing to pray for you; and I will teach you the good and right way. 24Only, fear Jehovah, and serve him in truth, with all your heart; for see how great things he has done for you. 25But if ye do wickedly, ye shall perish, both ye and your king.