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?