(19) Is this your son, who ye say was born blind?--The "ye" is emphatic; ye say he was born blind, as opposed to us, for we do not believe it. There are three questions. Is this your son? Do ye still say that he was born blind? which is incredible, as he now possesses the faculty of sight (John 9:32). If you do, how do you account for the fact that he now sees?

How then doth he now see?--Their question means--"How does it come to pass, since he was born blind, that he all at once seeth?" The word rendered "now," here and in John 9:21; John 9:25, conveys the idea of the suddenness of the change which had taken place.

9:18-23 The Pharisees vainly hoped to disprove this notable miracle. They expected a Messiah, but could not bear to think that this Jesus should be he, because his precepts were all contrary to their traditions, and because they expected a Messiah in outward pomp and splendour. The fear of man brings a snare, Pr 29:25, and often makes people deny and disown Christ and his truths and ways, and act against their consciences. The unlearned and poor, who are simple-hearted, readily draw proper inferences from the evidences of the light of the gospel; but those whose desires are another way, though ever learning, never come to the knowledge of the truth.And they asked them, saying, is this your son,.... The first question they put was, whether the man that stood before them, pointing to him, was their son or not; whether they knew him by any marks to be their son, and would own him as such: had they answered to this in the negative, they would have got an advantage against him, and would have convicted him of a lie, since he had given out that he was the son of such parents; and proving such a lie upon him, would at once have brought the whole affair into suspicion at least: they add,

who ye say was born blind; this contains a second question, whether, if this was their son, he was born blind or not; and if he was not born blind, though he had been blind, it would have greatly lessened the miracle: and besides, they would have put other questions upon this, whether his blindness was real, and by what means it came. Next follows a third question,

how then doth he now see? By what means has he received his sight? They might hope, that if he was their son, and was really born blind, that he had his sight some other way than by Jesus; or they might object this to his being born, blind, as being a thing impossible, or at least not credible that he should ever see, was that the case.