"...if you let Me, I will make you perfect."

“Make no mistake [Christ would say], if you let Me, I will make you perfect. The moment you put yourself in my hands, that is what you are in for. Nothing less, or other, than that. You have free will, and if you choose, you can push Me away. But if you do not push Me away, understand that I am going to see this job through. Whatever suffering it may cost you in your earthly life… whatever it costs Me, I will never rest, nor let you rest, until you are literally perfect…. This I can do and will do. But I will not do anything less. God’s demand for perfection need not discourage you in the least in your present attempts to be good, or even in your present failures. Each time you fall He will pick you up again. And He knows perfectly well that your own efforts are never going to bring you anywhere near perfection. On the other hand, you must realize from the onset that the goal towards which He is beginning to guide you is absolute perfection; and no power in the whole universe, except you yourself can prevent Him from taking you to that goal."

C.S. Lewis, Mere Christianity