John 6:51

"And the bread that I will give is My flesh, which I will give for the life of the world." Here one might reasonably enquire, how this was a fit season for these words, which neither edified nor profited, but rather did mischief to those who had been edified; for "from that time," saith the Evangelist, "many of His disciples went back," saying, "This is a hard saying; who can hear it?" since these things might have been entrusted to the disciples only, as Matthew hath told us that He discoursed with them apart. What then shall we say? What is the profit of the words? Great is the profit and necessity of them. Because they pressed upon Him, asking for bodily food, reminding Him of the food provided in the days of their forefathers, and speaking of the manna as a great thing, to show them that all those things were but type and shadow, but that the very reality of the matter was now present with them, He mentioneth spiritual food. "But," saith some one, "he ought to have said, Your fathers did eat manna in the wilderness, but I have given you bread." But the interval between the two miracles was great, and the latter of them would have appeared inferior to the former, because the manna came down from heaven, but this, the miracle of the loaves, was wrought on earth.

When therefore they sought food "coming down from heaven," He continually told them, "I came down from heaven." And if any one enquire why He introduced the discourse on the Mysteries, we will reply, that this was a very fitting time for such discourses; for indistinctness in what is said always rouses the bearer, and renders him more attentive. They ought not then to have been offended, but rather to have asked and enquired. But now they went back. If they believed Him to be a Prophet, they ought to have believed His words, so that the offense was caused by their own folly, not by any difficulty in the words. And observe how by little and little He led them up to Himself. Here He saith that Himself giveth, not the Father; "The bread that I will give is My flesh, which I will give for the life of the world."

"If any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, for the life of the world." When did flesh comprehend this flesh which He called bread? That is called flesh which flesh does not comprehend, and for that reason all the more flesh does not comprehend it, that it is called flesh. For they were terrified at this: they said it was too much for them; they thought it impossible. "Is my flesh," saith He, "for the life of the world." Believers know the body of Christ, if they neglect not to be the body of Christ. Let them become the body of Christ, if they wish to live by the Spirit of Christ. None lives by the Spirit of Christ but the body of Christ. Understand, my brethren, what I mean to say. Thou art a man; thou hast both a spirit and a body. I call that a spirit which is called the soul; that whereby it consists that thou art a man, for thou consistest of soul and body. And so thou hast an invisible spirit and a visible body. Tell me which lives of the other: does thy spirit live of thy body, or thy body of thy spirit? Every man that lives can answer; and he that cannot answer this, I know not whether he lives: what doth every man that lives answer? My body, of course, lives by my spirit. Wouldst thou then also live by the Spirit of Christ? Be in the body of Christ. For surely my body does not live by thy spirit. My body lives by my spirit, and thy body by thy spirit. The body of Christ cannot live but by the Spirit of Christ. It is for this that the Apostle Paul, expounding this bread, says: "One bread," saith he, "we being many are one body." O mystery of piety! O sign of unity! O bond of charity! He that would live has where to live, has whence to live. Let him draw near, let him believe; let him be embodied, that he may be made to live. Let him not shrink from the compact of members; let him not be a rotten member that deserves to be cut off; let him not be a deformed member whereof to be ashamed; let him be a fair, fit, and sound member; let him cleave to the body, live for God by God: now let him labor on earth, that hereafter he may reign in heaven.

(Gloss. Nic.) Our Lord pronounces Himself to be bread, not only in respect of that Divinity, which feeds all things, but also in respect of that human nature, which was assumed by the Word of God: And the bread, He says, that I will give is My flesh, which I will give for the life of the world. (Tr. xxvi. 13) But when does flesh receive the bread which He calls His flesh? The faithful know and receive the Body of Christ, if they labour to be the body of Christ. And they become the body of Christ, if they study to live by the Spirit of Christ: for that which lives by the Spirit of Christ, is the body of Christ. This bread the Apostle sets forth, where he says, We being many are one body. (1 Cor. 12:12) O sacrament of mercy, O sign of unity, O bond of love! Whoso wishes to live, let him draw nigh, believe, be incorporated, that he may be quickened.

"I am the living bread, which came down from heaven." For that reason "living," because I came down from heaven. The manna also came down from heaven; but the manna was only a shadow, this is the truth.