Now this was John's testimony when the Jews of Jerusalem sent priests and Levites to ask him who he was. He did not fail to confess, but confessed freely, "I am not the Christ." They asked him, "Then who are you? Are you Elijah?" He said, "I am not." "Are you the Prophet?" He answered, "No." Finally they said, "Who are you? Give us an answer to take back to those who sent us. What do you say about yourself?" John replied in the words of Isaiah the prophet, "I am the voice of one calling in the desert, `Make straight the way for the Lord.'"