Spiritually speaking, everyone is born blind. Jesus is the light of the world, so he has come to take away that blindness. In this sign he gives physical sight to a man who has never seen, as a pointer to the spiritual sight the man himself – and everyone – needs. As the narrative progresses, so too does the man’s appreciation of who Jesus is. Finally he worships him. Don’t give up the quest to know more about Jesus merely because you don’t have perfect sight now.