This chapter tells of Jesus healing a blind man: but why did He do it? It was not just divine compassion, but also a focussed opportunity to teach His disciples the principles of the Gospel, in a way they would never forget (John 9:39-41). As they walked down the road, on the Sabbath day, they saw a young blind man. They were thinking, why is he blind, whose fault is it; and if he was blind from birth, was it his parents' fault? They knew from Genesis 3:14-19 that sin caused illness and death, but who had sinned? So, they asked Jesus.