What do the Gospel Words, "And if ye will receive it, this is Elias, which was for to come" (Mt. 11:14) Mean?

The great Prophet Elias was taken up to heaven in a fiery chariot (4 Kings 2:1–18). According to the Old Testament Prophecy, he will return to the earth before the coming of the Messiah Christ: Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the LORD (Mal. 4:5). This will happen at the Second Coming of the Savior. According to St. Andrew of Cesarea, the two witnesses spoken of in the Book of Revelations will be righteous Enoch and Elias: And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth. These are the two olive trees, and the two candlesticks standing before the God of the earth. And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies: and if any man will hurt them, he must in this manner be killed. These have power to shut heaven, that it rain not in the days of their prophecy: and have power over waters to turn them to blood, and to smite the earth with all plagues, as often as they will (Rev. 11:3-6). The Jewish contemporaries of the Savior awaited the coming of Elias during their time (Mt. 16:14,17,10; Jn. 1:21). The Lord explained the true meaning of this prophecy of Malachi, saying that it relates to St. John the Forerunner: And his disciples asked him, saying, Why then say the scribes that Elias must first come? And Jesus answered and said unto them, Elias truly shall first come, and restore all things. But I say unto you, That Elias is come already, and they knew him not, but have done unto him whatsoever they listed. Likewise shall also the Son of man suffer of them. Then the disciples understood that he spake unto them of John the Baptist (Mt. 17:10).