John 9:25

"He answered and said, Whether he be a sinner or no, I know not; one thing I know, that, whereas I was blind, now I see." Surely the blind man was not terrified? That be far from him. How then doth he who said, "He is a Prophet", now say, "Whether he be a sinner, I know not"? He said so, not as being in such a state of mind, nor as having persuaded himself of this thing, but desiring to clear Him from their charges by the testimony of the fact, not by his own declaration, and to make the defense credible, when the testimony of the good deed done should decide the matter against them. Since if after many words when the blind man said, "Except this were a righteous man he could not do such miracles", they were so enraged as to reply, "Thou wast altogether born in sin, and dost thou teach us?" what would they not have said, if he had spoken so from the beginning; what would they not have done? "Whether he be a sinner or not, I know not"; as though he had said, "I say nothing in this man's favor, I make no declaration at present, yet this I certainly know and would affirm, that if he were a sinner he could not have done such things." Thus he kept himself free from suspicion, and his testimony uncorrupted, as not speaking from partiality, but as bearing witness according to the fact.

The man, that he might neither expose himself to calumny, nor at the same time conceal the truth, answers not that he knew Him to be righteous, but, Whether He be a sinner or no, I know not.

"Then again called they the man who had been blind, and said unto him, Give God the glory." What is that, "Give God the glory"? Deny what thou hast received. Such conduct is manifestly not to give God the glory, but rather to blaspheme Him. "Give God," they say, "the glory: we know that this man is a sinner. Then said he, If he is a sinner, I know not: one thing I know, that whereas I was blind, now I see."