They asked him, “Then what? Are you Elijah?” He said, “I am not.” “Are you the prophet?” He answered, “No.”
In context
19This is the testimony John gave when the Jews sent priests and Levites from Jerusalem to ask him, “Who are you?” 20He confessed and did not deny it; he confessed, “I am not the Christ.” 21They asked him, “Then what? Are you Elijah?” He said, “I am not.” “Are you the prophet?” He answered, “No.” 22So they said to him, “Who are you, then? We need an answer for those who sent us. What do you say about yourself?” 23He replied, “I am a voice crying out in the desert: make the way of the Lord straight — as the prophet Isaiah said.”