John 1:23

23 He said, "I am `the voice of one crying in the wilderness, "Make straight the way of the Lord,"' as said the prophet Isaiah."

John 1:23 In-Context

21 And they asked him, "What then? Art thou Elijah?" And he said, "I am not." "Art thou that Prophet?" And he answered, "No."

22 Then said they unto him, "Who art thou, that we may give an answer to those who sent us? What sayest thou of thyself?"

23 He said, "I am `the voice of one crying in the wilderness, "Make straight the way of the Lord,"' as said the prophet Isaiah."

24 And those who were sent were of the Pharisees.

25 And they asked him, and said unto him, "Why dost thou baptize then if thou art not that Christ, nor Elijah, neither that Prophet?"