Jesus was teaching along the shore and became swarmed by people and saw two boats at waters edge and stepped into one of them asking Peter to push it away from shore so He could continue His preaching. After Jesus finished He asked Peter to go out further and to let down the nets.
Peter did but said they had worked all night and caught nothing. This time the nets were so full of fish the nets began to tear. Peter shouted for help and James and John came out to help in their boat. Both boats were filled with so many fish they were on the verge of sinking.
Peter realized what had happened and said to Jesus, "Oh, Lord, please leave me - I'm too much of a sinner to be around you."
I see a Savior who loves all men, even sinners. Peter admitted being a sinner, yet the Lord blessed Peter and his partners to overflowing. Or from Peter's perspective, blessed beyond belief.
Jesus then said to them in verse 10; "Don't be afraid! From now on you'll be fishing for people!" I believe Jesus had them catch so many fish then saying they would soon be fishing for people to give them a vision of sorts as to how abundant their fishing for people would be. They would find their efforts would produce a catch that would go beyond what they could possibly imagine. Truthfully that is exactly what happened. These men along with others brought an entire world to accept and know Jesus Christ and find forgiveness and their work continues even today.
As they traveled, Jesus healed a man with an advanced case of leprosy. Another day Jesus was teaching to a crowd so large no one could enter the place not even get close. Two men were bringing a paralyzed man to Jesus to be healed and had to go on the roof and make an opening to lower him down.
Seeing their faith, Jesus said to them in verse 20; "Young man, your sins are forgiven." There were Pharisees and teacher of religious law in attendance who said to one another, " Who does he think he is? That's blasphemy! Only God can forgive sins!" Jesus knew what they were saying and asked them if it was easier to say your sins are forgiven or stand up and walk?
Jesus then said to the man, "Stand up, pick up your mat, and go home!" With everyone watching, the man immediately did just that and walked away praising God. The crowd was filled with awe and they also praised God. My thought ran to the idea that back then, many people believed people were sick because of sin. So if Jesus healed someone, He would have had to take away their sin. Whether he forgave their sin or made them walk again, in the eyes of some in His day, the person's sin would have to have been forgiven. He might have asked that question so they would understand.
As Jesus left town, He met and called Levi, a tax collector to follow Him. Levi dropped what he was doing and went along. Levi held a banquet at his home in Jesus honor and invited many of his fellow tax collectors. The Pharisees and teachers of the religious law were bitter and asked Jesus disciples why He would eat and drink with such people. They would never do such a thing for they felt they were clean and would become unclean by associating with such scum.
Jesus answered in verse 31; "Healthy people don't need a doctor - sick people do. I have come to call not those who think they are righteous but those who know they are sinners and need to repent."
Jesus came to call those who knew they needed to be forgiven. One would understand that anyone who knew they were sinful and needed forgiveness would actually hear and accept Jesus message. However, Jesus message to those who "thought" they were righteous would feel they had no need to hear or act on Jesus teachings. Jesus came to heal people of their brokenness but those who (thought) were not broken had no need of healing.
Jesus finishes the lesson of the new and old wine and the new and old wineskins with verse 39; "But no one who drinks the old wine seems to want the new wine. The old is just fine, they say."
People who had the old religion, the old law and old ways of thinking had no need for the new messages Jesus was bringing, They thought the "good old" way they believed was fine leaving no room to learn about new ways. If they saw nothing broken in the old way why even look at the new way?
For example an old thought was an eye for an eye but Jesus taught to turn the other cheek. Many people were just fine holding on to what was taught in the past. Jesus brought something very new and very different but in reality He was bringing what the old way pointed to but people just could not see that and were not ready to accept it or change to get it.