1 Samuel 12:25 KJV

But if ye shall still do wickedly, ye shall be consumed, both ye and your king.
1 Samuel 12:25, King James Version

In context

24 Only fear the Lord, and serve him in truth with all your heart: for consider how great things he hath done for you.

25 But if ye shall still do wickedly, ye shall be consumed, both ye and your king.