“Afterward Jesus findeth him in the temple, and said unto him, Behold, thou art made whole: sin no more, lest a worse thing come unto thee.”
King James Version (KJV)
5:14 Sin no more - It seems his former illness was the effect or punishment of sin.
Joh 5:14 Sin no more, lest a worse thing come unto thee. His own sins, thirty-eight years before, had brought on this infirmity. What was their nature we are not informed, but we know that often our fleshly ills can thus be accounted for.