Haydock's Catholic Bible Commentary: John
Ver. 48. Because the multitude still insisted in begging for their corporal nourishment and remembering the food that was given to their fathers, Christ, to shew that all were figures of the present spiritual food, answered, that he was the bread of life. (Theophylactus) --- Here Jesus Christ proceeds to the second part of his discourse, in which he fully explains what that bread of life is, which he is about to bestow upon mankind in the mystery of the holy Eucharist. He declares then, in the first place, that he is the bread of eternal life, and mentions its several properties; and secondly, he applies to his own person, and to his own flesh, the idea of this bread, such as he has defined it.
Ver. 51. Christ now no longer calls the belief in him, or the preaching of the gospel, the bread that he will give them; but he declares that it is his own flesh, and that flesh which shall be given for the life of the world. (Calmet) --- This bread Christ then gave, when he gave the mystery of his body and blood to his disciples. (Ven. Bede)
Ver. 52. The bread which I will give, is my flesh for the life of the world.[2] In most Greek copies we read, is my flesh which I will give for the life of the world. Christ here promised what he afterwards instituted, and gave at his last supper. He promiseth to give his body and blood to be eaten; the same body (though the manner be different) which he would give on the cross for the redemption of the world. The Jews of Capharnaum were presently scandalized. How (said they) can this man give us his flesh to eat? But notwithstanding their murmuring, and the offence which his words had given, even to many of his disciples, he was so far from revoking, or expounding what he had said of any figurative or metaphorical sense, that he confirmed the same truth in the clearest and strongest terms. Amen, amen, I say to you, unless you eat, &c. And again, (ver. 56.) For my flesh is meat indeed, and my blood is drink indeed. I cannot omit taking notice of what St. Chrysostom and St. Cyril, in their commentaries on this place, have left us on these words, How can this man do this? These words which call in question the almighty and incomprehensible power of God, which hinder them, says St. Chrysostom, from believing all other mysteries and miracles: they might as well have said: How could he with five loaves feed five thousand men? This question, How can he do this? Is a question of infidels and unbelievers. St. Cyril says that How, or, How can he do this? cannot, without folly, be applied to God. 2ndly, he calls it a question of blasphemy. 3rdly, a Jewish word, for which these Capharnaites deserved the severest punishments. 4thly, He confutes them by the saying of the prophet Isaias, (lv. 9.) that God's thoughts and ways are as much above those of men, as the heavens are above the earth. But if these Capharnaites, who knew not who Jesus was, were justly blamed for their incredulous, foolish, blasphemous, Jewish saying, how can he give us his flesh to eat? much more blameable are those Christians, who, against the words of the Scripture, against the unanimous consent and authority of all Christian Churches in all parts of the world, refuse to believe his real presence, and have nothing to say, but with the obstinate Capharnaites, how can this be done? Their answers are the same, or no better, when they tell us that the real presence contradicts their senses, their reason, that they know it to be false.
We may also observe, with divers interpreters, that if Christians are not to believe that Jesus Christ is one and the same God with the eternal Father, and that he is truly and really present in the holy sacrament of the Eucharist, it will be hard to deny but that Christ himself led men into these errors, which is blasphemy. For it is evident, and past all dispute, that the Jews murmured, complained, and understood that Christ several times made himself God, and equal to the Father of all. 2ndly, When in this chapter, he told them he would give them his flesh to eat, &c. they were shocked to the highest degree: they cried out, this could not be, that these words and this speech was hard and harsh, and on this very account many that had been his disciples till that time, withdrew themselves from him, and left him and his doctrine. Was it not then at least high time to set his complaining hearers right, to prevent the blasphemous and idolatrous opinions of the following ages, nay even of all Christian Churches, by telling his disciples at least, that he was only a nominal God, in a metaphorical and improper sense; that he spoke only of his body being present in a figurative and metaphorical sense in the holy Eucharist? If we are deceived, who was it that deceived us but Christ himself, who so often repeated the same points of our belief? His apostles must be esteemed no less guilty in affirming the very same, both as to Christ's divinity, and his real presence in the holy sacrament, as hereafter will appear. (Witham) --- Compare the words here spoken with those he delivered at his last supper, and you will see that what he promises here was then fulfilled: "this is my body given for you." Hence, the holy Fathers have always explained this chapter of St. John, as spoken of the blessed sacrament. See the concluding reflexions, below.
Ver. 53. Because the Jews said it was impossible to give them his flesh to eat, Christ answers them by telling them, that so far from being impossible, it is very necessary that they should eat it. "Unless you eat," &c. (St. Chrysostom) --- It is not the flesh of merely a man, but it is the flesh of a God, able to make man divine, inebriating him, as it were, with the divinity. (Theophylactus) See Maldonatus.
Ver. 54. Unless you eat ... and drink, &c. To receive both the body and blood of Christ, is a divine precept, insinuated in this text; which the faithful fulfil, though they receive but in one kind; because in one kind they receive both the body and blood, which cannot be separated from each other. Hence life eternal is here promised to the worthy receiving, though but in one kind: (ver. 52.) If any man eat of this bread he shall live for ever: and the bread which I will give, is my flesh for the life of the world: (ver. 58.) He that eateth me, the same also shall live by me: (ver. 59.) He that eateth this bread shall live for ever. (Challoner)
Ver. 55. Jesus Christ, to confirm the notion his disciples had formed of a real eating of his body, and to remove all metaphorical interpretation of his words, immediately adds, "Unless you eat the flesh of the Son of man, and drink his blood, you shall not have life in you. ... For my flesh is meat indeed, and my blood is drink indeed;" which could not be so, if, as sectarists pretend, what he gives us in the blessed sacrament is nothing but a bit of bread; and if a figure, certainly not so striking as the manna.
Ver. 58. As the living Father hath sent me, his only, his true Son, to become man; and I live by the Father, proceeding always from him; so he that eateth me, first by faith only, by believing in me; and secondly, he that eateth my body and blood, truly made meat and drink, though after a spiritual manner, (not in that visible, bloody manner as the Capharnaites fancied to themselves) shall live by me, and live for ever, happy in the kingdom of my glory. (Witham)
Ver. 61. If Christ had wished to say nothing else than that his disciples should be filled with his doctrine, that being his flesh and blood, it would not have been a hard saying; neither would it have shocked the Jews. He had already said as much in the former part of his discourse: but he goes on in still stronger terms, notwithstanding their complaints; and, as they were ignorant how he would fulfil his promise, they left him, (Calmet) and followed the example of the other unbelieving Jews, as all future sectarists have, saying: how can this be done?
Ver. 62. If you cannot believe that I can give you my flesh to eat, now that I am living amongst you, how will you believe, that, after my ascension, I can give you to eat my glorified and immortal flesh, seated on the right hand of the majesty of God? (Bible de Vence)
Ver. 63. If then you shall see, &c. Christ, by mentioning his ascension, by this instance of his power and divinity, would confirm the truth of what he had before asserted; at the same time, correct their gross apprehension of eating his flesh and drinking his blood, in a vulgar and carnal manner, by letting them know he should take his whole body living with him to heaven; and consequently not suffer it to be, as they supposed, divided, mangled, and consumed upon earth. (Challoner) --- The sense of these words, according to the common exposition, is this: you murmur at my words, as hard and harsh, and you refuse now to believe them: when I shall ascend into heaven, from whence I came into the world, and when my ascension, and the doctrine that I have taught you, shall be confirmed by a multitude of miracles, then shall you and many others believe. (Witham)