structural:scholar_edition
Christianity

The Gospels describe John the Baptist as having had a specific role ordained by God as forerunner or precursor of Jesus, who was the foretold Messiah. The New Testament Gospels speak of this role. In Luke 1:17 the role of John is referred to as being "to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just; to make ready a people prepared for the Lord." In Luke 1:76 as "thou shalt go before the face of the Lord to prepare his ways" and in Luke 1:77 as being "To give knowledge of salvation unto his people by the remission of their sins."

There are several passages within the Old Testament which are interpreted by Christians as being prophetic of John the Baptist in this role. These include a passage in the Book of Malachi that refers to a prophet who would "prepare the way of the Lord":

Behold, I will send my messenger, and he shall prepare the way before me: and the Lord, whom ye seek, shall suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he shall come, saith the L ORD of hosts.

Also at the end of the next chapter in Malachi 4:5–6 it says,

Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the L ORD: And he shall turn the heart of the fathers to the children, and the heart of the children to their fathers, lest I come and smite the earth with a curse.

The Jews of Jesus' day expected Elijah to come before the Messiah; indeed, some present day Jews continue to await Elijah's coming as well, as in the Cup of Elijah the Prophet in the Passover Seder. This is why the disciples ask Jesus in Matthew 17:10, "Why then say the scribes that Elias must first come?" The disciples are then told by Jesus that Elijah came in the person of John the Baptist,

Jesus replied, "To be sure, Elijah comes and will restore all things. But I tell you, Elijah has already come, and they did not recognize him, but have done to him everything they wished. In the same way the Son of Man is going to suffer at their hands." Then the disciples understood that he was talking to them about John the Baptist.

These passages are applied to John in the Synoptic Gospels. But where Matthew specifically identifies John the Baptist as Elijah's spiritual successor, the gospels of Mark and Luke are silent on the matter. The Gospel of John states that John the Baptist denied that he was Elijah.

Now this was John's testimony when the Jews of Jerusalem sent priests and Levites to ask him who he was. He did not deny, 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."