The Jews therefore murmured concerning him, because he said, “I am the bread which came down out of heaven.”
And they said, is not this Jesus the son of Joseph?.... From murmuring they go to mocking and scoffing at his parentage and descent, and object this to his coming down from heaven; and intend by it to upbraid him with the meanness of his birth, being the son of Joseph, a poor carpenter; and suggest, that it was great arrogance in him to claim...
Although Christ had in the foregoing verses plainly asserted himself to be the true bread that came down from heaven, for the benefit of the world; yet the Jews understanding his words carnally, are offended with him, for pretending to come down from heaven, when they knew him to be the son of Joseph and Mary.
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