(John 1:37-42 NIV) When the two disciples heard him say this, they followed Jesus. Turning around, Jesus saw them following and asked, “What do you want?” They said, “Rabbi” (which means “Teacher”), “where are you staying?” “Come,” he replied, “and you will see.” So they went and saw where he was staying, and they spent that day with him. It was about four in the afternoon. Andrew, Simon Peter’s brother, was one of the two who heard what John had said and who had followed Jesus. The first thing Andrew did was to find his brother Simon and tell him, “We have found the Messiah” (that is, the Christ). And he brought him to Jesus. Jesus looked at him and said, “You are Simon son of John. You will be called Cephas” (which, when translated, is Peter).
(Hebrews 12:1 NIV) Therefore, since we are surrounded by such a great cloud of witnesses, let us throw off everything that hinders and the sin that so easily entangles. And let us run with perseverance the race marked out for us,
(Romans 10:14-15 NIV) How, then, can they call on the one they have not believed in? And how can they believe in the one of whom they have not heard? And how can they hear without someone preaching to them?
And how can anyone preach unless they are sent? As it is written: “How beautiful are the feet of those who bring good news!”