Seeing

 In John 9: 1-41 Jesus heals a blind man.  Of course, the man is extremely grateful but the Pharisees tried to use the healing as condemnation because they considered it work on the Sabbath.

Ironic isn't it?  The Pharisees didn't see the miracle.  They didn't see Jesus as the messiah, or as a healer, or as a prophet, or even a holy man.  They were blinded.