Yet, Jesus knew what the man's real need was, and what his greatest need was. What good was it if the man had two whole legs, and walked right into hell with them?
Whenever there is a problem, almost always, sin is the real problem. Jesus got right to the problem.
Jesus did not mean that the paralyzed man was especially sinful, or that his paralysis was directly caused by sin. Instead, He addressed the man's greatest need, and the common root of all pain and suffering - man's sinful condition.
"Forgiveness is the greatest miracle that Jesus ever performs. It meets the greatest need; it costs the greatest price; and it brings the greatest blessing and the most lasting results." (Wiersbe)