BOOK OF JOHN FIRST BLOG

Ok, so it's my second day of reading thru the book of John and both days I found myself focusing on this verse:
John 5:14
14 Later Jesus found him at the temple and said to him, "See, you are well again. Stop sinning or something worse may happen to you."NIV
** "You are well AGAIN.".... 38 years this man was sick and it doesn't say alot about how he got sick but the fact was, he was laying there on a mat for 38 years wanting to be healed. After Jesus heals the man, He then uses some interesting words of instruction to this man. "You are well AGAIN. Stop sinning or someting worse may happen to you." Was He saying this because the man became sick in the first place because of sin in his life? And was Jesus saying this because He suggested that if the man continued to sin that he would be sick again? Very interesting.... what do you think?