John 9:17-21

They say unto the blind man again, What sayest thou of him, that he hath opened thine eyes? He said, He is a prophet.

But the Jews did not believe concerning him, that he had been blind, and received his sight, until they called the parents of him that had received his sight.

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

His parents answered them and said, We know that this is our son, and that he was born blind:

But by what means he now seeth, we know not; or who hath opened his eyes, we know not: he is of age; ask him: he shall speak for himself.