As he went along, he saw a man blind from birth. His disciples asked him, “Rabbi, who sinned, this man or his parents, that he was born blind?” “Neither this man nor his parents sinned,” said Jesus, “but this happened so that the works of God might be displayed in him.” (John 9:1-3)
The disciples had evidently been taught that sin and hurt, injury and handicap are linked together; that human hurt is the result of human sin. Notice that Jesus does not deny that. It is helpful to note right from the beginning that he recognizes there is such a link. However, it is not the one that many people think, as he will make clear.