It is interesting that our Lord asked the man if he wanted to be well. Wouldn’t it seem obvious that he wanted healing since he had been hurting for decades? Why else would he have been there?
And, since Jesus is God, he already knew whether or not the man desired a cure. He knows what is in the heart of every human being. He did not need to ask because he knew; he asked for the man’s sake rather than his own. He wanted the man to examine himself and decide whether or not he wanted to be well. He wanted the sick man to participate in his own healing.
— from the book Forgiving Mother: A Marian Novena of Healing and Peace by Marge Steinhage Fenelon