John 6:31

Christ having declared that he was greater than Moses, (since Moses could not promise them bread which should never perish) the Jews wished for some sign by which they might believe in him; therefore they say: Our fathers did eat manna in the desert, but you have only given us bread; where then is the food that perishes not? Christ therefore answers them, that the food which Moses gave them, was not the true manna from heaven, but that it was only a figure of himself, who came down from heaven to give life to the world. (St. Augustine) — St. Chrysostom observes, that the Jews here acknowledge Christ to be God, since they entreat Christ not merely to ask his Father to give it them; but, do thou thyself give it us.

They thought it reasonable, that he who brought forth a new doctrine into the world (such as faith in him was, they having never heard any such thing from their doctors the Pharisees) should confirm his mission by some miraculous operation. But this was a strange stupidity, considering the sign he had so lately showed them, of feeding five thousand with five loaves and two fishes. So it was manifest they sought for a sign, not to promote or confirm their faith, but merely to feed their curiosity; and what our Saviour said, Mat 12:39, An evil and adulterous generation seeketh after a sign, was truly applicable to them; and those words, eminently confirm it; for the aforesaid miracle speaking in him a creative power, and being such as was never wrought by any creature, they were obliged to believe him, without any further sign. God ought to be believed upon his bare word.

(2.) That they preferred the miraculous feeding of Israel in the wilderness before all the miracles Christ wrought (v. 31): Our fathers did eat manna in the desert; and, to strengthen the objection, they quote a scripture for it: He gave them bread from heaven (taken from Ps 78 24), he gave them of the corn of heaven. What a good use might be made of this story to which they here refer! It was a memorable instance of God's power and goodness, often mentioned to the glory of God (Neh 19 20, 21), yet see how these people perverted it, and made an ill use of it. [1.] Christ reproved them for their fondness of the miraculous bread, and bade them not set their hearts upon meat which perisheth; "Why," say they, "meat for the belly was the great good thing that God gave to our fathers in the desert; and why should not we then labour for that meat? If God made much of them, why should not we be for those that will make much of us?" [2.] Christ had fed five thousand men with five loaves, and had given them that as one sign to prove him sent of God; but, under colour of magnifying the miracles of Moses, they tacitly undervalue this miracle of Christ, and evade the evidence of it. "Christ fed his thousands; but Moses his hundreds of thousands; Christ fed them but once, and then reproved those who followed him in hope to be still fed, and put them off with a discourse of spiritual food; but Moses fed his followers forty years, and miracles were not their rarities, but their daily bread: Christ fed them with bread out of the earth, barley-bread, and fishes out of the sea; but Moses fed Israel with bread from heaven, angel's food." Thus big did these Jews talk of the manna which their fathers did eat; but their fathers had slighted it as much as they did now the barley-loaves, and called light bread, Num 21 5. Thus apt are we to slight and overlook the appearances of God's power and grace in our own times, while we pretend to admire the wonders of which our fathers told us. Suppose this miracle of Christ was outdone by that of Moses, yet there were other instances in which Christ's miracles outshone his; and, besides, all true miracles prove a divine doctrine, though not equally illustrious in the circumstances, which were ever diversified according as the occasion did require. As much as the manna excelled the barley-loaves, so much, and much more, did the doctrine of Christ excel the law of Moses, and his heavenly institutions the carnal ordinances of that dispensation.

Verses 28-35 Constant exercise of faith in Christ, is the most important and difficult part of the obedience required from us, as sinners seeking salvation. When by his grace we are enabled to live a life of faith in the Son of God, holy tempers follow, and acceptable services may be done. God, even his Father, who gave their fathers that food from heaven to support their natural lives, now gave them the true Bread for the salvation of their souls. Coming to Jesus, and believing on him, signify the same. Christ shows that he is the true Bread; he is to the soul what bread is to the body, nourishes and supports the spiritual life. He is the Bread of God. Bread which the Father gives, which he has made to be the food of our souls. Bread nourishes only by the powers of a living body; but Christ is himself living Bread, and nourishes by his own power. The doctrine of Christ crucified is now as strengthening and comforting to a believer as ever it was. He is the Bread which came down from heaven. It denotes the Divinity of Christ's person and his authority; also, the Divine origin of all the good which flows to us through him. May we with understanding and earnestness say, Lord, evermore give us this Bread.