Since many of the followers of Jesus were fishermen, it made sense for Jesus to use fishing as an example of the Christian life. In Matthew 4:19, as Jesus is walking by the Sea of Galilee, he sees Simon Peter and Andrew in the process of fishing. He says to them, "Follow me, and I will make you fishers of men."
In this text, Jesus gives them another picture of the work they would be doing. On their own, they are not able to catch many fish, but when Jesus commands them to cast the net on the other side of the boat, they catch more fish than they can handle. How are we doing at catching fish? Perhaps the problem is that we keep doing it the same way and the Lord would like us to try a new method.
The apostle Paul in 1 Corinthians 9:22 says, "I have become all things to all men, that I might by all means save some." Maybe that's the same as casting your nets on the other side of the boat.
Several years ago when I was visiting Norway, the land of my great-grandparents, I learned something about evangelism. Since my wife was born in Norway, her family was giving us a tour of the country that on occasion was off the beaten track. On our way from Trondheim to the little island of Stord, we came across one of the famous Stave churches. These churches are around 1,000 years old. They are made of wood and are built with large posts or staves that go into the ground. At one time, there were around 1,000 Stave churches; now there are only thirty. One of the reasons is that the wood rots over time. However, the one that we saw had its posts in a rock foundation, and this explains why it is still in existence.
What was really fascinating to me were the symbols on the walls. I recognized most of them but there were some that I did not understand. I asked one of the guides what they meant. She told me that the symbols that I did not recognize were pagan symbols. It seems that when King Olaf became a Christian, he would go into the villages and demand that the people all become Christians. Since the Christian faith was forced on the people, they would display pagan symbols so as to meet the people where they were.
I am not suggesting that we use pagan symbols to reach our current society. However, we can do some things with music and in other areas that would better relate to our culture. If the Norwegians and the apostle Paul can learn that, certainly we can try to relate to our culture without destroying the gospel. Perhaps this is what Jesus meant by casting the net on the other side of the boat.