Jesus heard they had ejected him, and when he found him he said to him, ‘Do you believe in the Son of man?’
‘Sir,’ the man replied, ‘tell me who he is so that I may believe in him.’
Jesus said, ‘You have seen him; he is speaking to you.’
The man said, ‘Lord, I believe,’ and worshipped him.
Jesus said: It is for judgement that I have come into this world, so that those without sight may see and those with sight may become blind.
Hearing this, some Pharisees who were present said to him, ‘So we are blind, are we?’
Jesus replied: If you were blind, you would not be guilty, but since you say, ‘We can see,’ your guilt remains.
— John 9: 35-41 (New Jerusalem Bible)