But why did you go out? To see a prophet? Yes, I tell you, and far more than a prophet.

What, then, did you go for? To see a prophet? Yes, I tell you, and far more than a prophet.

A prophet? - He next asks whether they went to see a prophet. They had regarded him as such, and Jesus tells them that in this their apprehensions of him were correct.
More than a prophet - Sustaining a character more elevated and sacred than the most distinguished of the ancient prophets. Those had been regarded as the most eminent of the prophets who had most clearly predicted the Messiah. Isaiah had been distinguished above all others for the sublimity of his writings, and the clearness with which he had foretold the coming of Christ. Yet John surpassed even him. He lived in the time of the Messiah himself. He predicted his coming with still more clarity. He was the instrument of introducing him to the nation. He was, therefore, first among the prophets.

A prophet? yea - and more than a prophet - That is, one more excellent (περισσοτερον) than a prophet; one greatly beyond all who had come before him, being the immediate forerunner of Christ, (see below), and who was especially commissioned to prepare the way of the Lord.
This was a fourth excellency: he was a prophet, a teacher, a man divinely commissioned to point out Jesus and his salvation; and more excellent than any of the old prophets, because he not only pointed out this Christ, but saw him, and had the honor of dying for that sacred truth which he steadily believed and boldly proclaimed.

But what went ye out for to see?.... Since it was not any thing so mean as a shaking reed, or so grand as a man in gay clothing, pray what was it you went out to see?
A prophet? This was the truth of the matter, they expected to see a prophet, and they believed he was one; this was the common voice of the people; all held John to be a prophet. This made Herod afraid to put him to death, and the Pharisees to speak against his baptism: now, though this was giving him a great character, to believe and own him to be a prophet, yet it did not come up to his full character.
Yea, I say unto you, and more than a prophet; when they saw him, they saw not only a prophet, but one that was greater, and more excellent than any of the prophets that went before him: they prophesied of the Messiah at a distance, and in words not so clear, and easy to be understood; they spoke of him as to come, but he pointed him out with his finger, and declared that he was come; he saw him himself, and showed him to others; he saw the Spirit of God descending on him, and he himself baptized him; his office, as the harbinger of Christ, and the administrator of the ordinance of baptism to him, gave him a preference to all the prophets; and was such an one, as never any man was vested with but himself.

More than a prophet. He was more than a prophet, because he was a reformer, forerunner and way-preparer, as well as prophet. No other prophet ever had so honored an office.

More than a prophet - For the prophets only pointed me out afar off; but John was my immediate forerunner.