6:47-51 The advantage of the manna was small, it only referred to this life; but the living Bread is so excellent, that the man who feedeth on it shall never die. This bread is Christ's human nature, which he took to present to the Father, as a sacrifice for the sins of the world; to purchase all things pertaining to life and godliness, for sinners of every nation, who repent and believe in him.

49. Your fathers—of whom ye spake (Joh 6:31); not "ours," by which He would hint that He had a higher descent, of which they dreamt not [Bengel].

did eat manna … and are dead—recurring to their own point about the manna, as one of the noblest of the ordained preparatory illustrations of His own office: "Your fathers, ye say, ate manna in the wilderness; and ye say well, for so they did, but they are dead—even they whose carcasses fell in the wilderness did eat of that bread; the Bread whereof I speak cometh down from heaven, which the manna never did, that men, eating of it, may live for ever."