John 1:21-23

21And they asked him, What then? Art thou Elias? And he says, I am not. Art thou the prophet? And he answered, No.

22They said therefore to him, Who art thou? that we may give an answer to those who sent us. What sayest thou of thyself?

23He said, I [am] [the] voice of one crying in the wilderness, Make straight the path of [the] Lord, as said Esaias the prophet.