1 Samuel 12:24 in the King James Version
Only fear the LORD, and serve him in truth with all your heart: for consider how great things he hath done for you.
Context
23 Moreover, as for me, far be it from me that I should sin against the LORD in ceasing to pray for you; but I will instruct you in the good and the right way.
24 Only fear the LORD, and serve him in truth with all your heart; for consider what great things he has done for you.
25 But if you keep doing evil, you will be consumed, both you and your king.”