WNT(i)
20 He avowed--he did not conceal the truth, but avowed, "I am not the Christ."
21 "What then?" they inquired; "are you Elijah?" "I am not," he said. "Are you the Prophet?" "No," he answered.
22 So they pressed the question. "Who are you?" they said-- "that we may take an answer to those who sent us. What account do you give of yourself?"
23 "I am THE VOICE," he replied, "OF ONE CRYING ALOUD, 'MAKE STRAIGHT THE LORD'S WAY IN THE DESERT,' fulfilling the words of the Prophet Isaiah."