He that eats my flesh, and drinks my blood, dwells in me, and I in him.
All Commentaries on John 6:56 Go To John 6
Cyril of Alexandria
AD 444
Manifoldly does Christ initiate us by these words, and since His Discourse is hard of attainment by the more unlearned, asking for itself rather the understanding of faith than investigation, He revolving again and again over the same ground makes it easy in divers ways, and from all parts illumines what is useful therein, fixing as a kind of foundation and groundwork the most excellent desire for it. For he that eateth My Flesh (saith He) and drinketh My Blood abideth in Me and I in him. For as if one should join wax with other wax, he will surely see (I suppose) the one in the other; in like manner (I deem) he who receiveth the Flesh of our Saviour Christ and drinketh His Precious Blood, as He saith, is found one with Him, commingled as it were and immingled with Him through the participation, so that he is found in Christ, Christ again in him. Thus was Christ teaching us in the Gospel too according to Matthew, saying, The Kingdom of heaven is like unto leaven, which a woman took and hid in three measures of meal, till the whole was leavened. Who then the woman is, what the three measures of meal, or what the measure at all, shall be spoken of in its proper place: for the present we will speak only of the leaven. As then Paul saith that a little leaven leaveneth the whole lump, so the least portion of the Blessing blendeth our whole body with itself, and filleth it with its own mighty working, and so Christ cometh to be in us, and we again in Him. For one may truly say that the leaven is in the whole lump, and the lump by like reasoning is in the whole leaven: you have in brief the sense of the words. And if we long for eternal life, if we pray to have the Giver of immortality in ourselves, let us not like some of the more heedless refuse to be blessed nor let the Devil deep in wickedness, lay for us a trap and snare a perilous reverence.
Yea (says he) for it is written, He that eateth of the Bread, and drinketh of the Cup unworthily, eateth and drinketh doom unto himself: and I, having examined myself, see that I am not worthy.
When then wilt thou be worthy (will he who thus speaks hear from us) when wilt thou present thyself to Christ? for if thou art always going to be scared away by thy stumblings, thou wilt never cease from stumbling (for who can understand his errors? as saith the holy Psalmist) and wilt be found wholly without participation of that wholly-preserving sanctification. Decide then to lead a holier life, in harmony with the law, and so receive the Blessing, believing that it hath power to expel, not death only, but the diseases in us. For Christ thus coming to be in us lulleth the law which rageth in the members of the flesh, and kindleth piety to God-ward, and deadeneth our passions, not imputing to us the transgressions in which we are, but rather, healing us, as sick. For He bindeth up that which was crushed, He raiseth what had fallen, as a Good Shepherd and One that hath laid down His Life for His sheep