This is as much as, I am he. Thou hast not only seen him with the eyes of thy body, but thou hast had experience of his Divine virtue and power, in giving thee sight who wert born blind: thus seeing also signifieth, 1 Thessalonians 14:9. It is very observable here, that miracles do not work faith, but confirm it. The blind man had experienced here a miracle wrought upon himself, but yet he is an unbeliever, until the Lord cometh to give him the revelation of his word: faith cometh by hearing: but together with this word we must also conceive a mighty power to have flowed from Christ, inwardly enlightening him, and enabling him to discern the truth of what he told him, and making him yet further willing to receive him, and close with him.
Related Commentaries of John 9:37
John 9:37
37 And Jesus said unto him,Thou hast both seen him, and it is he that talketh with thee.