John 9:21 - Exposition

The third question is prudently remitted back to the consciousness and testimony of the man himself. The parents had some justification for their cowardice. They had no information beyond that which their son had given them. He had stumbled forth as usual on the morning of that sabbath, and bad returned home in transports of joy. Their son had doubtless told them the story (the use of οἴδαμεν instead of γινώσκομεν is significant). They knew by incontestable intuitive knowledge the personality and lifelong affliction of their son; but, say they, We do not know ( absolutely ) how he now sees; or who opened his eyes, we know not. Ask him (if you want to know); he is of full age, and therefore his testimony is valid in your court. He will speak (concerning) for himself . " We can only come to know from his testimony what he tells us, and he can himself speak for himself, and tell you all he has told us ."