Thank you for providing your source of information, but after reading what he/she said in the sermon, I have serious questions about what he wrote. BTW just because he/she uploaded his sermons to a data base, it does not mean that he/she is either Evangelical or recognized by others as a serious scholar. As a matter of fact, I tried to fins some data about this person, such as a bio on the site, and I was not able to do that. I CAN say that his/her style of sermon writing is very much in the pattern that the Mormons use, and I can say that his usage of words seems more to impress others than to be an accurate description of things e.g. "Clouds and angels are promiscuously the chariots of God. " and "His appearance upon the mount was a kind of specimen of the resurrection " and "Calvary is the theme of celestial rapture "and " the presence of his retinue of angels is understood"
BTW "celestial" is a code-word for the Mormonic three levels of heaven doctrine.
Plus, your comment is really not in keeping with the facts of the Transfiguration: "Moses and Elijah are just symbols that describe future events. " You seem not to remember the connection between the two: Elijah was the ONLY person living on Earth, who never died, and Lucifer attempted to claim the dead body of Moses.
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The historicity of the transfiguration is doubted by some because of its supernatural elements. It is often thought to be a post-resurrection story read back into the life of Jesus. But the story bears no real resemblance to other resurrection appearances (Moses, Elijah, and the glory of Jesus do not appear in any resurrection story). And reference to it in 2 Pt 1:16–18 indicates that the transfiguration was always seen as occurring before Jesus’ passion and not after
Cabal, T., Brand, C. O., Clendenen, E. R., Copan, P., Moreland, J. P., & Powell, D. (2007). The Apologetics Study Bible: Real Questions, Straight Answers, Stronger Faith (p. 1531). Nashville, TN: Holman Bible Publishers.
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Perhaps the most egregious errors that your source makes are these:
1) "But the apostles are all dead, and the kingdom is still future." It seems as your source has not read Acts, and the rest of the NT. the Apostles ALL were very much alive when the Transfiguration happened
2) "In the visions of the prophets the two advents of Messiah are blended "
3) "Of this glory there were remarkable prophetic anticipations in the glorious Divine forms or similitudes of Old Testament times." Since when does God share His unique glory with
anyone?
Additionally, your statement
"The transfiguration is specifically describing
(1) the rapture and
(2) the first resurrection.
[3] Moses represents those who are dead in their grave, Elijah represents those that are still alive."
is not found in any part of the teaching that Jesus explained about the Transfiguration. Since Jesus did make it a point to explain the parables to His disciples, is it not conceivable that He would have used some of the same terminology that your source any you are using? the conspicuous absence of such teachings is compelling evidence that makes your teachings (and the author's) highly unlikely..
With what group does your source affiliate?