John 1:36

36 When he saw Jesus passing by, he said, "Look! The Lamb of God!"

John 1:36 In-Context

34 I have seen and testified that He is the Son of God!"

35 Again the next day, John was standing with two of his disciples.

36 When he saw Jesus passing by, he said, "Look! The Lamb of God!"

37 The two disciples heard him say this and followed Jesus.

38 When Jesus turned and noticed them following Him, He asked them, "What are you looking for?" They said to Him, "Rabbi" (which means "Teacher"), "where are You staying?"