Jesus said to them, "I am the bread of life. He who comes to me will not be hungry, and he who believes in me will never be thirsty.
Those who infer from this passage that to eat Christ isfaith, and nothing else, reason inconclusively. I readily acknowledge that there is no other way in which we eat Christ than by believing; but the eating is the effect and fruit of faith rather than faith itself. For faith does not look at Christ only as at a distance, but embraces him, that he may become ours and may dwell in us. It causes us to be incorporated with him, to have life in common with him, and, in short, to become one with him, (John 17:21.) It is therefore true that by faith alone we eat Christ, provided we also understand in what manner faith unites us to him. 