John Calvin Commentary John 6:58

"This is the bread which came down out of heaven: not as the fathers ate, and died; he that eateth this bread shall live for ever." — John 6:58 (ASV)

This is the bread which came down from heaven. He returns to the comparison between the manna and his flesh, with which he had begun; for it was necessary for him to conclude the sermon in this manner: “There is no reason why you should prefer Moses to me, because he fed your fathers in the wilderness; since I supply you with far more excellent food, for I bring heavenly life with me.”

For — as was formerly said — the bread is said to have come down from heaven, because it has nothing earthly or corruptible in its nature, but breathes the immortality of the kingdom of God. Those who were only bent on feeding the belly did not find such virtue in the manna; for while the manna had a twofold use, the Jews, with whom Christ is now disputing, perceived in it nothing other than bodily food. But the life of the soul is not fading, but makes continual progress until the whole man is renewed.