John 1:40-41 Andrew, Simon Peter's brother, was one of these men who had heard what John said and then followed Jesus. The first thing Andrew did was to find his brother, Simon, and tell him. "We have found the Messiah"(which means the Christ).
What would have happened if Andrew had not listened to John when he spoke of Jesus and followed Him? John was the forerunner and cousin of Jesus. He was given the task by God to prepare the way for Christ's public ministry. He heard what John said and took it to heart and followed the Lord. We then see what happened because Andrew chose to believe in Jesus instead of reject Him. He did not keep his new faith to himself; he went and told his brother, Simon Peter.
What would have happened if Andrew had not gone and told his brother, Simon, about Jesus? Simon (Peter) later on became the leader of the early church. It was Peter who stood up and preached Jesus to the crowds after Pentecost. It was Peter who God used to convince a multitude of people to believe in Him. If Andrew had decided that his faith in Jesus was his and had chosen to keep it to himself, his brother may never had become a follower of Christ.
I wonder how many people we fail to share the Gospel with could play an integral part of the church some day if only we had cared enough to share it with them? How many souls will be lost because of our letting one soul slip through our lives without telling them? We can never know what a difference could be made in people's lives if only we would be faithful witnesses for Christ. Don't minimize the importance of the encounters the Lord brings across your path. Perhaps you will be the one who will lead the next Billy Graham to the Lord.