The phrase "won over" translates the Greek word kerdos. It means "something gained." Kerdos is a business term. It can also be translated as "profit."
My son introduced me to a reality TV show called "The Profit." Marcus Lemonis goes into struggling businesses and makes them profitable again. If the show were broadcast in Rome it might be called "The Kerdos."
There are two ways of sharing the Gospel. We can share it verbally by telling it in words, and we can share it non-verbally by living it out by our actions. This is VERY IMPORTANT: both are essential and must go together! If we tell the Gospel, but don't live it out, there will be no authority to our witness. The people said of Jesus that His teaching was unlike the religious leaders because He taught "with authority." What does that mean? The religious leaders taught the people, but their behavior contradicted their teaching. Jesus, on the other hand, lived a life that exemplified the power of the Gospel. His teaching carried the weight of moral authority because His life supported His message. On the other hand, our holy life must be accompanied by a verbal Gospel witness. The Bible says, "So faith comes from what is heard, and what is heard comes through the message about Christ" (Romans 10:17).
I heard about a Christian banker who did not believe in verbally sharing the Gospel. He believed that "living the life" was all the witness he needed to give. One day a loan officer approached him and said, "Henry, I've noticed that you are different." The banker thought, "Here it is; she's going to ask me if I'm a Christian!" The loan officer asked, "Tell me Henry, are you a Sagittarius?" We can live an exemplary Christian life, but how will people know that Jesus is the reason for the difference unless we tell them?!
Here is the point I want to make: one purpose of witnessing is to see a profit. We want to see something gained. The bottom line is that we want to see people won to Christ. There is nothing wrong with that. That is a pure, holy, noble ambition. And why do we want to see people won to Christ? It is not for our profit... it is for Christ's! We want to see the gain for His glory! The bottom line is that one day there will be another soul added to His kingdom, standing before the throne in heaven singing praises to Him! That is the kerdos we should seek.