When a person receives an organ transplant, they must also go onto a regimen of drugs to keep their body from rejecting the new organ. The exact thing they need in order to have new and full life is attacked by their body. It is viewed as an invader. It is seen as a destroyer. We need the gospel but we see it this way. This is the tin soldier CS Lewis talks about in Mere Christianity:
Did you ever think, when you were a child, what fun it would be if your toys could come to life? Well suppose you could really have brought them to life. 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 spoilt. He thinks you are killing him. He will do everything he can to prevent you. He will not be made into a man if he can help it. What you have done about that tin soldier I do not know. But what God did about us was this: The Second Person in God, the Son, became human Himself… And because the whole difficulty for us is that the natural life has to be, in a sense, “killed,” He chose an earthly career which involved the killing of His human desires at every turn – poverty, misunderstanding from His own family, betrayal by one of His intimate friends, being jeered at and manhandled by the police, and execution by torture. And then, after being thus killed – killed every day in a sense – the human creature in Him, because it was united to the divine Son, came to life again. The Man in Christ rose again: not only the God. That is the whole point, for the first time we saw a real man. One tin soldier – real tin, just like the rest – had come fully and splendidly alive.