John 9:18-22

The Jews then did not believe it about him, that he had been blind and had received sight, until they called the parents of the very one who had received his sight,

and they questioned them, saying, “Is this your son, who you say was born blind? Then how does he now see?”

His parents then answered and said, “We know that this is our son, and that he was born blind;

but how he now sees, we do not know; or who opened his eyes, we do not know. Ask him; he is of age, he will speak for himself.”

His parents said this because they were afraid of the Jews; for the Jews had already reached the decision that if anyone confessed Him to be Christ, he was to be excommunicated from the synagogue.