John 9:35-39

Jesus heard that they had cast him out; and finding him, he said, Dost thou believe on the Son of God? He answered and said, And who is he, Lord, that I may believe on him? Jesus said unto him, Thou hast both seen him, and he it is that speaketh with thee. And he said, Lord, I believe. And he worshipped him. And Jesus said, For judgment came I into this world, that they that see not may see; and that they that see may become blind.