Whosoever eats my flesh, and drinks my blood, has eternal life; and I will raise him up at the last day.
All Commentaries on John 6:54 Go To John 6
Cyril of Alexandria
AD 444
Herein too ought we specially to admire the holy Evangelist openly crying, And the Word was made Flesh. For he shrank not from saying, not that He was made in Flesh, but that He was made Flesh, that he might shew the Union. And we do not say either that God the Word, of the Father, was transformed into the nature of the Flesh, or that the flesh passed into the Word (for Each remaineth that which it is by nature, and One Christ of Both); but in a manner unspeakable and passing human understanding, the Word united to His Own Flesh, and having, as it were, transformed It all into Himself (according to the operation which lieth in His power of quickening things lacking life) drave forth of our nature the corruption, and dislodged too death which of old prevailed by means of sin. He therefore that eateth the Holy Flesh of Christ, hath eternal life: for the Flesh hath in Itself the Word Which is by Nature Life. Wherefore He saith, I will raise him up at the last day. Instead of saying, My Body shall raise him up, i. e., him that eateth It, He hath put I: not as though He were other than His Own Flesh (and not wholly so by nature), for after the Union He cannot at all be severed into a pair of sons. I therefore (He saith) Who am become in him, through Mine Own Flesh, that is, will raise up him who eateth thereof, in the last day. For it were indeed even impossible that He Which is by Nature Life, should not surely overcome decay, and master death. Wherefore even though death which by the transgression sprang on us compel the human body to the debt of decay, yet since Christ is in us through His Own Flesh, we shall surely rise. For it were incredible, yea rather impossible, that Life should not make alive those in whom It is. For as if one took a spark and buried it amid much stubble, in order that the seed of fire preserved might lay hold on it, so in us too our Lord Jesus Christ hideth life through His Own Flesh, and inserts it as a seed of immortality, abolishing the whole corruption that is in us.