Matthew Poole and continuators on John 9:19

19 And they asked them saying, Is this your son, who ye say was born blind? how then doth he now see ?

The Parents of this man that was Blind, in their Answer shew a great deal of discretion and prudence. Three things the Pharisees ask, 1. Whether this were their Son? 2. Whether (as they said) he was indeed born blind? 3. How he came now to see? The manner of the propounding their question, Who (ye say) lets us know what Answer they would have had, and that they did not send for the Parents of this Blind man, out of a desire to know the naked Truth of the thing, but hoping to fright them into a speaking (doubtfully at least) whether it was their Son yea or no? or whether he was stark blind when he was born, yea or no? But alas! the Providence of God ordering his condition to be so poor, that he was glad to beg for his livelihood, made this design vain, would his Parents have gratified the Pharisees, by any shuffling, and indirect Answer?