So they asked Him, “What sign then will You perform, so that we may see it and believe You? What will You do?
What sign showest thou, &c.--But how could they ask "a sign," when many of them scarce a day before had witnessed such a "sign" as had never till then been vouchsafed to men; when after witnessing it, they could hardly be restrained from making Him a king; when they followed Him from the one side of the lake to the other; and when, in the...
Verse 30. What sign showest thou? On the word sign compare . What miracle dost thou work to prove that thou art the Messiah? They had just seen the miracle of the loaves in the desert, which was sufficient to show that he was the Messiah, and it would seem from the preceding narrative that those who crossed the lake to see him supposed that he was the Christ.
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