C. S. Lewis

Imagine turning a tin soldier into a real little man. It would involve turning the tin into flesh. And suppose the tin soldier did not like it. He is not interested in flesh; all he sees is that the tin is being spoiled. He thinks you are killing him. He will do everything he can do to prevent you. He will not be made into a man if he can help it. The real Son of God is at your side. He is beginning to turn you into the same kind of thing as Himself; He is beginning, so to speak, to ‘inject’ His kind of life and thought, his Zoe, (spiritual life) into you; beginning to turn the tin soldier into a live man. The part of you that does not like it is the part that is still tin.