John 1:27

27 He who is to come after me, and whose sandal-strap I am not worthy to unfasten."

John 1:27 In-Context

25 Again they questioned him. "Why then do you baptize," they said, "if you are neither the Christ nor Elijah nor the Prophet?"

26 "I baptize in water only," John answered, "but in your midst stands One whom you do not know--

27 He who is to come after me, and whose sandal-strap I am not worthy to unfasten."

28 This conversation took place at Bethany beyond the Jordan, where John was baptizing.

29 The next day John saw Jesus coming towards him and exclaimed, "Look, that is the Lamb of God who is to take away the sin of the world!