I love the stories of Jesus healing people. In John 9 there is a story that sheds light on te whole topic of pain and illness. Jesus met a man who had been born blind. The religious leaders of that day immediately did what so many religious people still do today: they decided that someone must have sinner and done something wrong for this man to be "punished" by being blind. John 9: 2. But Jesus amswered them: "It was neither that this man sinner, nor his parents; but it was so that the works of God might be displayed in him." Jesus went on to heal this man of his blindness.
I think that so often it is easy to point fingers and say that illness must be the cause of something a human has done. There definately are illnesses that can be from doing wrong or abusing our bodies .. but this Bible story shows us that we should not be so fast to judge when we meet something who is ill or in pain. God is big enough to use even something like a baby being born blind to bring about a greater purpose that we can see.
I for one would be happy if God has allowed my physical weekness and pain to somehow bring people to see the bigness and wonderfulness of our great God!