13 “The man answered and said unto them, Herein is a marvellous thing, that you know not from whence he is, and yet he has opened my eyes. Now we know that God hears not sinners; but if any man is a worshipper of God, and does His will, him He hears.” He speaks still as one only anointed. For God hears even sinners. For if God heard not sinners, in vain would the publican, casting his eyes on the ground, and smiting on his breast, have said, “Lord, be merciful to me a sinner.” And that confession merited justification, as this blind man enlightenment. “Since the world began was it not heard that any man opened the eyes of one that was born blind. If this man were not of God, he could do nothing.” With frankness, constancy, and truthfulness [he spoke]. For these things that were done by the Lord, by whom were they done but by God? Or when would such things be done by disciples, were not the Lord dwelling in them?
Source: Tractates on the Gospel of John (New Advent)