They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work?
30. What sign doest thou? This wickedness abundantly proves how truly it is said elsewhere, This wicked generation seeketh a sign, (Matthew 12:39.) They had been at first drawn to Christ by the admiration of his miracles or signs, and afterwards, through amazement at a new sign, they acknowledged Christ to be the Messiah, and, with that conviction, wished to make him a king; but...
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
Our fathers did eat manna in the wilderness,.... Which was a sort of food prepared by angels in the air, and rained down from thence about the tents of the Israelites; it was a small round thing, as small as the hoar frost on the ground; it was like a coriander seed, and the colour of it was the colour of bdellium: it was so...