Your fathers did eat manna in the wilderness, and are dead.
49. Your fathers ate manna in the wilderness, and are dead. He says that the manna was a perishing food to their fathers, for it did not free them from death. It follows, therefore, that souls do not find anywhere else than in him that food by which they are fed to spiritual life.
Christ let them question Him freely, no small condescension. The wise teacher listens swiftly and turns even foolish questions toward what profits. These Galileans asking "What shall we do?" show a teachable mind, unlike the Judean critics who came only to cavil. He answers the sincere request, not the impertinent quibble.
AI summary
Commenting on John 6:28-59
I am the living bread which came down from heaven,.... This is the same with what is said in Joh 6:33, which is true of Christ, as he has life in him; and is the author and giver of life to others; and is of an heavenly original, and came from heaven to give life to men: and such is the virtue of this living...