Life is a Hospital
"After baptism there still remains much of the old Adam. For, as we have often said, it is tame that sin is forgiven in baptism, but we are not yet altogether clean, as is shown in the parable of the Samaritan, who carried the man wounded by robbers to an inn [Luke 10:30–37]. He did not take care of him in such a way that he healed him at once, but rather bound up his wounds and poured on oil. The man who fell among robbers suffered two injuries. First, everything that he had was taken from him, he was robbed; and second, he was wounded, so that he was half-dead and would have died, if the Samaritan had not come to him. Adam fell among the robbers and implanted sin in us all. If Christ, the Samaritan, had not come, we should all have had to die. He it is who binds our wounds, carries us into the church and is now healing us. So we are now under the Physician’s care. The sin, it is true, is wholly forgiven, but it has not been wholly purged. If the Holy Spirit is not ruling men, they become corrupt again; but the Holy Spirit must cleanse the wounds daily. Therefore this life is a hospital; the sin has really been forgiven, but it has not yet been healed."
Martin Luther, vol. 51, Luther’s Works, Vol. 51 : Sermons I, ed. Jaroslav Jan Pelikan, Hilton C. Oswald and Helmut T. Lehmann, Luther’s Works, 51:373 (Philadelphia: Fortress Press, 1999, c1959).