St. Cyril of Alexandria ca. 376-444
The Savior Himself declares, “Whoever eats My Flesh and drinks My Blood abides in Me and I in him.” By this statement it is to be seen that Christ does not say He will be in us only after the fashion of some relation that is solely intellectual, but also through a participation truly according to nature. Just as if someone were to entwine two pieces of wax together and melt them with a fire, so that both are made one, so too through participation in the Body of Christ and in His Precious Blood, He is united in us and we too in Him. In no other way can that corruptible nature be vivified except by being united bodily to the Body of Him who is, by His very nature, life: that is, the Only-begotten. (Commentary on John, on 15:1)
