John 9:29

We know that God spake unto Moses; as for this fellow, we know not from whence He is.

The Pharisees were in a quandary. If the facts concerning this miracle were spread abroad, the fame of Christ would grow and be carried out in all directions, and their prestige would receive a severe jolt. Therefore they made another attempt to shake the testimony of the man, but this time in such a way as to make him deny that a miracle had been performed. With a sanctimonious air they admonish him to give glory to God alone by telling the actual truth, and not a piece of fiction invented for the benefit of Jesus. There is almost a bit of threatening in the words: We know that this Man is a sinner. The deduction was that it must have been impossible to perform what the man claimed had been done. But the man doggedly stuck to the truth; he was not concerned about the sinfulness or sinlessness of his benefactor. One thing he knew: Having been blind, he could now see. This same simple faith and dogged perseverance should characterize a Christian's confession of Jesus. If unbelievers try to shake the testimony concerning Conversion or regeneration, the simple adhering to that one truth: I know the experience of my own heart and mind; it is not an illusion, but it is the firmest conviction in the world, will often repulse the enemies. In the effort to shake the firmness of this witness, the Jews again asked him about the manner in which his eyes had been opened. It is hardly to be wondered at that the matter was getting on the man's nerves and that he answered them rather tartly. He had told them once, and they had evidently not listened very well; why should he repeat the same testimony over and over again? Their silly effort to inveigle him into some inconsistent statement was a despicable piece of strategy. But the man's taunt as to their wishing to become disciples of Jesus struck them in a tender place. Angrily they Revelation led him, charging him with being a disciple of that Man. They placed Jesus in the class of outcasts with whom they wanted nothing to do. But so far as they were concerned, they were the disciples of Moses, they piously assert. They were sure, in the case of Moses, that God had spoken with him; but in the case of this Man they have nothing definite to base their opinion on, they do not even know His origin. That was partly willful ignorance, partly blasphemous malice. They had had plenty of opportunity to get the information they desired, if they had only been willing to follow the directions of Jesus, chap. 7:17. Note: Unbelievers that attempt to be clever and sarcastic at the same time, throw aspersions upon the virgin birth of Christ, thus also questioning His origin, whereas a simple reading of Scripture would convince them, if they would not consistently resist the Holy Ghost.