Matthew 11:7

And as they departed ... - Jesus took occasion, from the inquiries made by John’s disciples, to instruct the people respecting the true character of John. Multitudes had gone out to hear him when he preached in the desert Matthew 3, and it is probable that many had been attracted by the novelty of his appearance or doctrines, or had gone simply to see and hear a man of singular habits and opinions. Probably many who followed Christ had been of that number. He took occasion, therefore, by some striking questions, to examine the motives by which they had been drawn to his ministry.

A reed shaken with the wind? - The region of country in which John preached, being overflowed annually by the Jordan, produced great quantities of “reeds” or “canes,” of a light fragile nature, easily shaken by the wind. They were therefore an image of a light, changing, inconstant man. John’s sending to Christ to inquire his character might have led some to suppose that he was changing and inconstant, like a reed. He had once acknowledged him to be the Messiah, and now, being in prison and sending to him to inquire into the fact, they might have supposed he had no firmness or fixed principles. Jesus, by asking this question, declared that, notwithstanding this appearance, this was not the character of John.