As they departed. — There was an obvious risk that those who heard the question of the Baptist, and our Lord’s answer, might be led to think with undue harshness, perhaps even with contempt, of one who had so far failed in steadfastness. As if to meet that risk, Jesus turns, before the messengers were out of hearing, to bear His testimony to the work and character of John. But a little while before, almost as his last public utterance, the forerunner had borne his witness to the King (John 3:23-36), and now He, in His turn, recognises to the full all the greatness of the work which that forerunner had accomplished.
What went ye out ...? — The tense points to the time when the first proclamation of the Baptist, as the voice of one crying in the wilderness, drew out crowds to listen to him. Jesus, by His question, bids them recall the impression which had then been made upon them. Had they gone out to see “a reed shaken by the wind?” The imagery was, of course, drawn from the rushes that grew upon the banks of the Jordan, but the use of the singular shows that it was meant to be understood symbolically. Had they gone out to see one who was swayed this way and that by every blast of popular feeling? No, not that; something quite other than that was what they had then beheld.