This is fulfilled through the One alone whom you, I do not know why, did not blush to call a sinner. Though a numerous choir of prophets appeared, and Sacred Scripture shows an innumerable multitude of righteous men, still "since the world began it has not been heard that anyone opened the eyes of one born blind."
Therefore is this not Christ, who brought fulfillment to the prophetic indications and brought into reality what had once been proclaimed? If no one except Him opens the eyes of the blind, what can finally resist faith?
What can turn away acknowledgment of Him? Or, with every doubt removed, should not the mystery of knowing Him go forward as though with swift movement along a smooth road?
Thus, in these words also, the healed man defends Christ the Savior. Notice how nobly and skillfully he composes his defense. Without any doubt, it would have been an act of very great boldness to say that Christ is higher and more glorious than both Moses and the prophets.
Yet it was useful to consider this also: angered by it, the Pharisees would cunningly present themselves as champions of the saints, as though the saints had been insulted. They would try to find here a plausible pretext to punish this man.
They did not want him, living and visible to all, to serve as a reminder of Christ's glory, and as a kind of image of the divine authority present in Him. For this reason, then, he turns aside the anger that might arise among the Pharisees because of this. He blocks the further path of their murderous designs.
He expresses the meaning of his speech generally and not altogether plainly. He says that from the ages no one at all has done what Christ did upon him. This was nothing other than an indication that Christ is higher and more glorious than all.
By His works He reveals such power and almighty authority present in Himself as none of the saints ever possessed. Thus the healed man crowns his Physician with superiority over all. For proof he takes the miracle impossible and inaccessible to others: the removal of blindness.
The man who had just received sight and was wondrously delivered from original blindness is shown to see the truth more clearly than those instructed in the law. Indeed, he uses very many wise words to prove the falsity of the Pharisees' opinion.