"What sign, then," they asked, "are you giving, which we may see, and so believe you? What is the work that you are doing?

Then Jesus said, "I have come into this world to judge it, so that those who are blind may see and so that those who see may become blind."

"If you had been blind," replied Jesus, "you would have had no sin to answer for; but, as it is, you say 'We can see,' and so your sin remains.