The first one he found was his own brother Simon. “We have found the Messiah,” he told him — which means the Christ.
In context
39“Come and you will see,” he told them. So they went and saw where he was staying, and they spent that day with him. It was about the tenth hour. 40Andrew, Simon Peter’s brother, was one of the two who had heard John and followed Jesus. 41The first one he found was his own brother Simon. “We have found the Messiah,” he told him — which means the Christ. 42He brought him to Jesus. Jesus looked at him and said, “You are Simon, son of John. You will be called Cephas” — which means Peter. 43The next day Jesus decided to leave for Galilee. He found Philip and said to him, “Follow me.”