John 1:38-40

38 And Jesus turned and saw them following Him, and asked them, "What do you want?" They answered Him, "Rabbi (which translated means Teacher), where are You staying?"

39 He said to them, "Come, and you will see." So they went [with Him] and saw where He was staying; and they stayed with Him that day, for it was about the[15] tenth hour.

40 One of the two who heard what John said and [as a result] followed Jesus was Andrew, Simon Peter's brother.