1 Samuel 12:23 - Matthew Poole's English Annotations on the Holy Bible

Think not that because you have so highly disobliged and rejected me, that I will revenge myself by neglecting to pray for you, or by praying against you, as I have now done for your conviction and humiliation, and so for your preservation; I am sensible it is my duty, as I am a man, a Israelite, a minister, a prophet, to pray for you. But I will teach you, Heb. and I will, &c., i.e. I will not only pray for you, which is one branch of my duty; but will also teach and instruct you, which is the other branch of it. And though you have cast me off from being your judge and ruler, yet I will not cease to be your instructer and monitor, to keep you from sin and destruction.