Jesus had just healed the man who had been sick for thirty-eight years. There were Jews standing around in this area when this man had been healed. They questioned the man about who had healed him. The man was doing work on the Sabbath by carrying his bed. This is another reason why he was approached by the Jews. In verse 10, the Jews said “…it is not lawful for thee to carry thy bed.” The man said that it was man that healed him. This same man told him to take up his pallet and walk. With that answer, they asked them to identify the man who said this. These Jews were going to reprimand Jesus for telling this man to break the Sabbath. The man did not know who Jesus was. Therefore, he could not tell them His name. Jesus had slipped off into the crowd. After this, Jesus came to the healed man giving him a specific commandment. Jesus said look, you have been made whole. Do not sin again. If you do sin, a worse thing would come upon you. [paraphrase mine] When Jesus left him, the man told the Jews that Jesus that had healed him.
This was not the only time Jesus had healed on the Sabbath. The Jews sought to persecute Jesus based upon this fact. They wanted to kill Him! Can you imagine that? Here were the religious leaders of that day, and they had murder in their hearts! They were the ones who studied and taught about the Old Testament law, and they needed to repent themselves. Their words were tainted with sin. There was no life in them. They were like whited sepulchers. They looked good on the outside, but inside they were dead men’s bones. http://ref.ly/Mt23.27