And if you are willing to receive it He now explains more clearly in what manner John began to preach the kingdom of God It was in the character of that Elijah, who was to be sent before the face of God, (Malachi 4:5.) Our Lord's meaning therefore is, that the great and dreadful day of the Lord, which Malachi described, is now beheld by the Jews, when Elijah, who was there promised, discharges his office as a herald. Again, by this exception, if you are willing to receive it, he glances at their hardened obstinacy, in maliciously shutting their eyes against the clearest light. But will he cease to be Elijah, if he shall not be received? Christ does not mean that John's official character [1] depends on their approbation; but having declared that he is Elijah, he charges them with carelessness and ingratitude, if he does not obtain that respect to which he is entitled.

Footnotes

1 - "L'estat et la commission de Iean;" -- "John's rank and commission."

If ye will receive it - This is a mode of speaking implying that the doctrine which he was about to state was different from their common views; that he was about to state something which varied from the common expectation, and which therefore they might be disposed to reject.
This is Elias - That is, "Elijah." Elias is the "Greek" mode of writing the Hebrew word "Elijah." An account of him is found in the first and second books of Kings. He was a distinguished prophet, and was taken up to heaven in a chariot of fire, 2-Kings 2:11. The prophet Malachi Malachi 4:5-6 predicted that "Elijah" would be sent before the coming of the Messiah to prepare the way for him. By this was evidently meant, not that he should appear "in person," but that one should appear with a striking resemblance to him; or, as Luke Luke 1:17 expresses it, "in the spirit and power of Elijah." But the Jews understood it differently. They supposed that Elijah would appear in person. They also supposed that Jeremiah and some other of the prophets would appear also to usher in the promised Messiah and to grace his advent. See Matthew 16:14; Matthew 17:10; John 1:21. This prevalent belief was the reason why he used the words "if ye will receive it," implying that the affirmation that "John" was the promised Elijah was a doctrine contrary to their expectation.

This is Elias, which was for to come - This should always be written Elijah, that as strict a conformity as possible might be kept up between the names in the Old Testament and the New. The Prophet Malachi, who predicted the coming of the Baptist in the spirit and power of Elijah, gave the three following distinct characteristics of him. First, That he should be the forerunner and messenger of the Messiah: Behold I send my messenger before me, Malachi 3:1. Secondly, That he should appear before the destruction of the second temple: Even the Lord whom ye seek shall suddenly come to his temple, ibid. Thirdly, That he should preach repentance to the Jews; and that, some time after, the great and terrible day of the Lord should come, and the Jewish land be smitten with a curse, Malachi 4:5, Malachi 4:6. Now these three characters agree perfectly with the conduct of the Baptist, and what shortly followed his preaching, and have not been found in any one else; which is a convincing proof that Jesus was the promised Messiah.

And if ye will receive it,.... The words carry in them some suspicion of unbelief and hardness of heart, as though they would not receive it: however, whether they would or not, it was a certain truth, that
this same person, "John the Baptist",
is Elias, which was for to come; who was appointed by God to come, and was prophesied of Malachi 4:5 that he should come; and even according to the doctrine of the Scribes and Rabbins, he was expected to come before the Messiah; only they in general thought that Elijah the Tishbite, in person, was meant; though some, as before observed (e), were of opinion, that some great prophet equal to Elijah, and endued with the same spirit, is intended; and which is true of John the Baptist, who came "in the Spirit" and "power" of Elias, Luke 1:17. And, as it was usual with the Jews (f), to call Phinehas by the name of Elias, and Elias Phinehas, because of his zeal for the Lord of hosts; for the same reason may John be called by the same name, there being a great resemblance between Elias and him; in their temper and disposition; in their manner of clothing, and austere way of living; in their very great piety and holiness; in their courage and integrity, in reproving vice; and in their zeal and usefulness in the cause of God, and true religion: in respect to which, Christ must be here understood, when he affirms John to be Elias; not Elias in person, but he that was intended by Elias, that was said should come: hence here is no contradiction to the words of the Baptist, in John 1:21 when he says, that he was not Elias; for the Jews, who put the question to him, whether he was Elias, or not? meant whether he was Elias in person, Elias the Tishbite, or not; and so John understood them, and very honestly and sincerely replies, he was not: but he does not deny that he was intended by this Elias, that was prophesied should come; yea, he says such things as might induce them to believe he was that person; hence, Christ, and he, say nothing contrary to, and irreconcilable, as the Jew (g) suggests, with each other.
(e) Vid. Pocock. not. in porta Mosis, p. 219. (f) Baal Hatturim in Numbers. xxv. 12. Kimchi in 1 Chron. ix. 20. Targum Jonah. in Exod. vi. 18. (g) R. Isaac Chizzuk Emuna, par. 1. c. 39. & par. 2. c. 15.

This is Elias, who was to come. Malachi predicted that Elijah would come to prepare the way for the Lord. Christ explains that this was fulfilled in John. He was not the literal, but a spiritual Elijah. See Malachi 4:5.

Malachi 4:5.