Andrew, Simon Peter’s brother, was one of these men who heard what John said and then followed Jesus. Andrew went to find his brother, Simon, and told him, “We have found the Messiah” (which means “Christ”). Then Andrew brought Simon to meet Jesus. Looking intently at Simon, Jesus said, “Your name is Simon, son of John—but you will be called Cephas” (which means “Peter”). John 1:40–42 (NLT)
For Andrew following the Messiah was not complete if he did not “share” his findings. Andrew was attentive as he listened to John the Baptist point out that Jesus was the Lamb that would take away the sins of the world. He had a living faith that motivated him to action; he left John and began to follow Jesus. In following the Messiah he had a selfless expectation that lead him to find his brother and bring him to the Good News incarnate.