When Christ promised that He would give His very Flesh to eat, the Jews protested because they imagined a natural and cannibalistic eating of Christ's Body. Christ refuted this notion of the manner in which His Flesh was to be received by saying that He would ascend into Heaven, not leaving His Body in its human form upon earth. But He did not say that they were not to eat His actual body. He would thus contradict Himself, for a little earlier He had said, "My flesh is meat indeed and My Blood is drink indeed." VI., 56. He meant, therefore, "You will not be asked to eat My flesh in the horrible and natural way you think for My Body as you see it with your eyes will be gone from this earth. Yet I shall leave My Flesh and Blood in another and supernatural way which your natural and carnal minds cannot understand. The carnal or fleshy judgment profits nothing. I ask you, therefore, to have faith in Me and to trust Me. It is the spirit of faith which will enable you to believe, not your natural judgment." Then the Gospel goes on to say that many would not believe, and walked no more with Him; just as many today will not believe, and walk no more with the Catholic Church. According to the doctrine of the Catholic Church Christ's Body is ascended into Heaven. But by its substance, independently of all the laws of space which affect substance through accidental qualities, this body is present in every consecrated Host.

Q. A. Eucharist, Quizzes To A Street Preacher
Fr. Chas. M. Carty & Rev. Dr. L. Rumble, M.S.C