Cyril of Alexandria — as excerpted in the Catena Aurea on Luke 7:24-28

“(ubi sup.) The Lord, knowing the secrets of men, foresaw that some would say, If until now John is ignorant of Jesus, how did lie shew Him to us, saying, Behold the Lamb of God, which taketh away the sins of the world? To quench therefore this feeling which had taken possession of them, He prevented the injury which might arise from the offence, as it follows, And when the messengers of John were departed, he began to speak unto the people concerning John, what went ye out for to see? A reed shaken in the wind? As if He said, Ye marvelled at John the Baptist, and oftentimes came to see him, passing over long journeys in the desert; surely in vain, if you think him so fickle as to be like a reed bending down whichever way the wind moves it. For such he appeal’s to be, who lightly avows his ignorance of the things which he knows.”