12. The Jews, as said above, had the prophecy concerning Elijah, that he was to come before the day of the Lord, Malachi 4:5. It is therefore also among Christians a current belief that Elijah is to come before the last day. Some add Enoch, others St. John the Evangelist. Of this we shall have something to say.
13. In the first place, all depends upon whether the prophet Malachi speaks of the second coming of the Lord on the last day, or of his first coming into flesh and through the Gospel. If he speaks of the last day, then we have certainly yet to expect Elijah; for God cannot lie. The coming of Enoch and St. John, however, has no foundation in Scripture, and is therefore to be considered as a fable. If, on the other hand, the prophet speaks of Christ’s coming in the flesh and through the Word, then assuredly Elijah is no more to be expected, but John is that same Elijah announced by Malachi.
14. I am of the opinion that Malachi spoke of no other Elijah than John, and that Elijah the Tishbite, who went up to heaven with the chariot of fire, is no more to be expected. To this opinion I am forced first and foremost by the words of the angel Gabriel, Luke 1:17, who says to John’s father, Zacharias: “And he shall go before his face in the spirit and power of Elijah, to turn the hearts of the fathers to the children, and the disobedient to walk in the wisdom of the just.” With these words the angel manifestly refers to the prophecy of Malachi, adducing even the words of the prophet, who also says that Elijah is to turn the hearts of fathers to children, — as cited above. Now then, if Malachi had meant another Elijah, the angel doubtless would not have applied these words to John.
15. In the second place, the Jews themselves of old understood Malachi to speak of Christ’s coming into the flesh. Therefore they here ask John whether he is Elijah, who is to come before the Christ. But they erred in thinking of the original and bodily Elijah. For the purport of the text is indeed that Elijah is to come beforehand, but not that same Elijah. We do not read, Elijah the Tishbite is to come, as the Bible calls him in 1 Kings 17:1 and 2 Kings 1:13 but merely Elijah, a prophet. This Gabriel, Luke 1:17, explains as meaning, “In the spirit and power of Elijah,” saying, as it were, He will be a real Elijah. Just as we now say of one who has another’s manner and carriage, He is a true!; as I may say e.g., The Pope is a real Caiaphas; John was a real St. Paul. In the same manner does God through Malachi promise one who is to be a true Elijah, i.e. John the Baptist.
16. Yet would I not trust the interpretation of the Jews alone, were it not confirmed by Christ, Matthew 10:10ff. When, on Mount Tabor, the disciples saw Elijah and Moses, they said to the Lord, “Why then say the scribes that Elijah must first come?” They meant to say, “You have already come; yet Elijah has not come first, but only now, after you: and was it not said that he was to come before you?” This interpretation was not rejected, but confirmed by Christ, who said, “Elijah truly shall first come, and restore all things. But I say unto you that Elijah is come already; and they knew him not, but have done unto him whatsoever they listed.” Then the disciples understood, says St. Matthew, that he spoke of John the Baptist.
St. Mark likewise says, Mark 13, “But I say unto you that Elijah is come, and they have done unto him whatsoever they would, even as it is written of him.”
