The gospel narrates to us the cure of a leper. It would be just like the other cures He did, but in this case, the way it was requested proves to be interesting. The leper begged for his cure by introducing his petition with a conditional. That is, "...If you wish..." Our Lord affirmed that He wanted to and He ordered his cure. The leprosy left him instantly. If you wish... If someone asks me a favor in this manner, I am forced to check myself and my disposition. Yes, I would like to be helpful, if he says, "if you want to, you can help me." The leper did the same to Jesus. Jesus, in a manner of saying, is "constrained" to acceding to the request.
