Those who have a sure hope, guaranteed by the Spirit, that they will rise again lay hold of what lies in the future as though it were already present. They say: “Outward appearances will no longer be our standard in judging other men. Our lives are all controlled by the Spirit now, and are not confined to this physical world that is subject to corruption. The light of the Only-begotten has shone on us, and we have been transformed into the Word, the source of all life. While sin was still our master, the bonds of death had a firm hold on us, but now that the righteousness of Christ has found a place in our hearts we have freed ourselves from our former condition of corruptibility.”
This means that none of us lives in the flesh anymore, at least not in so far as living in the flesh means being subject to the weaknesses of the flesh, which include corruptibility. Once we thought of Christ as being in the flesh, but we do not do so any longer, says Saint Paul. By this he meant that the Word became flesh and dwelt among us; he suffered death in the flesh in order to give all men life. It was in this flesh that we knew him before, but we do so no longer. Even though he remains in the flesh, since he came to life again on the third day and is now with his Father in heaven, we know that he has passed beyond the life of the flesh; for having died once, he will never die again, death has no power over him any more. His death was a death to sin, which he died once for all; his life is life with God.