The Book of Mormon was the only source in Judeo-Christian scripture to document temple worship after the death and resurrection of Christ—postresurrection Christian temple worship among an ancient people. When the Prophet first encountered Book of Mormon temple passages, temple worship had long been erased from the religious practice of Christians and Jews. While the Jews awaited the restoration of the prophesied third temple at Jerusalem, early Christians, especially in early Catholicism, had absorbed elements of temple ritual into the church sacrament (the Eucharist service, or Mass). Any notion of separate distinctive temple worship had disappeared. But the Book of Mormon pointed to a different possibility: a restoration of ancient temple worship—not with a Mosaic code, but with Christ at its center, modeled after the postresurrection temple worship of Bountiful. The Book of Mormon thus would provide the meaning of a Christian temple, as if to imply in the Prophet’s mind that his modern commission might be to reverse the course of Christian history and restore temple worship once again to its preeminent place as the holiest place of sacred worship, like the Hebrew Bible’s temple, the “House of the Lord.”
In 2000 I toured the Boston Temple with some of my neighbors prior to its dedication. One neighbor was an architect. After the tour he said “I was impressed with the design of the temple. It wasn’t at all what I expected. I thought we would see a large basilica or sanctuary with ornate design. But instead we saw many smaller worship spaces connected by hallways, staircases, and corridors. The worship spaces were truly beautiful but their design was quite different from what I’ve seen in other churches.”
Significantly, Smith defined temple worship as progressive worship, advancing through different ritual spaces – personal intimate rites, then group ritual, and unified congregational worship. The architectural design of the Kirtland Temple visibly emphasized this progressive worship form with its various ritual spaces: a main hall for congregational solemn assemblies, which was subdivided by curtains into smaller group worship spaces for temple instruction and prayer. The pulpit areas at opposing ends of the main hall were set apart by “veils” as private areas for personal intimate worship. In my book Schooling the Prophet I quote from Wilford Woodruff’s account of a Kirtland Temple endowment service that progresses from intimate prayers within one of the pulpit veils, to group rites and instruction in a partition formed with curtains rolled down, and finally to congregational ritual prayer with curtains rolled up. The entire experience lasted from early morning until four in the afternoon.
Read carefully the account of Christ’s ministration at the Bountiful Temple in the Book of Mormon, especially 3 Nephi 19 – what Andrew Ehat calls “the Nephite endowment.” It is a liturgical centerpiece of Nephite temple worship: the congregation partitioned into smaller worship groups for temple instruction and prayer; Christ’s twelve Nephite disciples officiating in worship rites, each assigned to a smaller worship group; the twelve ministering ritual language, repeating word for word “those same words which Jesus had spoken [to the twelve in the temple the day before]—nothing varying from the words which Jesus had spoken” (3 Nephi 19:8); the twelve forming a solemn prayer group in unified prayer, culminating in a final miraculous manifestation—the transfiguration of the prayer group participants as they were enveloped in the presence of Christ. The entire ritual experience provided a sacramental archetype for “endowment” in the early Restoration, a word Smith referred to frequently in aspiring for spiritual outpourings reminiscent of the Day of Pentecost account in the New Testament (Luke 24:49; Acts 2).
Elsewhere, Book of Mormon narratives reframed the fall of Adam as a fortunate fall (see Lehi’s blessing on Jacob, 2 Nephi 2:14-27), as an ascension narrative to return man to God – contradicting prevailing Protestant interpretations of Adam and sin. Hundreds of years later Lehi’s Eden interpretations are entrenched in the temple culture of the narratives of Ammonihah (Alma 12) with a heritage of priests after the order of Melchizedek “which were made pure, and entered into the rest of the Lord their God” (Alma 13:12). Doctrinally these ideas provided a foundational seedbed for temple theology, with steps along the way: The Enoch revelation of 1830 and the emergence of Smith’s theology on the theosis of man – as Terryl Givens noted: “Enoch’s rather surprising assertion that he makes to God, ‘thou hast made me, and given me a right to thy throne.’” Then the controversial Vision revelation of 1832 (D&C 76) which proclaimed that the faithful “are they who are Priests & Kings who having received of his fullness & of his Glory are Priests of the most high after the order of Melchisidec which was after the order of Enoch which was after the order of the only begotten Son wherefore as it is written they are Gods even the Sons of God wherefore all things are theirs.” Later these themes matured with the introduction of complete Nauvoo temple theology in 1842, but they were present in the earliest days of the Restoration and find their origins in the narratives of the Book of Mormon.
For much of his life Joseph was determined to conquer death, after losing his brother Alvin in 1823, then losing six of his eleven children after his mother had lost seven of her eleven children. The Book of Mormon’s Amulek declared a universal resurrection and Smith’s Vision revelation of 1832 opened the door for salvation to all but the sons of perdition. But Smith’s salvific development was not complete, for what mattered still in his quest was to deny the power of death to destroy the filial bonds of mortality—to preserve forever the familial relationships of those we love in the eternities to come. Mormon’s editorial hand preserved a very lengthy passage that he must have deemed exceptionally important (longer than the entire book of Moroni and longer than Mormon’s personal writings in his own internal text, the Book of Mormon). It recorded Mosiah2’s coronation by his father King Benjamin at the Zarahemla temple. The entire passage contains profound spiritual insights that culminate in Mosiah 5–6 when the aging King Benjamin establishes a salvific covenant community among his people—with a sealing blessing. His communal covenantal ceremony included a ritual purification (Mosiah 4:2), a new name taken collectively as a people (5:7), an oath made in the presence of ordained priests and the prophet-king himself (6:3), and a formal recording of the names of those received into the covenant community (6:1).
During the coronation ceremony the aging king invokes ancient enthronement rituals, covenants, symbols and sealing, but then applies them not just to the new king, but to all members of his covenant community. Matthew Bowen said: “it is the application of royal coronation/enthronement texts to the people themselves—making them all potentially kings and queens, sons and daughters at the right hand—that makes Benjamin’s speech so revolutionary . . . one expects that the new king Mosiah will take upon him a new name – a throne name (such as Benjamin, or Nephi, used historically in Nephite coronations, see Jacob 1:9-11). But Benjamin extends this symbolic rite to all his people: ‘The name of Christ, rather than Benjamin’s own name, is given to all his people as a new name— a ‘throne’ name.”
We see similar impulses emerging early in the restoration. In December 1830 Smith recorded the prophecy of Enoch describing in detail the filial bonds of communal covenant relationships in Enoch’s ancient city of Zion (Moses 7:63), representative of the filial relationships of heaven itself and echoing the Benjamin narratives of a covenant community brought to heaven with everlasting salvation and eternal life. In 1834 the Prophet’s father, Joseph Smith Sr., was ordained a patriarch to the church, a new office instituted to provide personal blessings of comfort, wisdom, and promises of personal destiny—but also to spiritually and ritually seal and adopt the believer into the communal family of God, which meant adoption into the house of Israel with promises of eternal blessings flowing from the ancient biblical covenant of Abraham, Isaac, and Jacob. On this doctrinal path, said Samuel Morris Brown, “Smith sacramentalized adoption, first with patriarchal blessings and baptism for the dead, complementary impulses of connection and salvation, then with family sealings within the Nauvoo Temple.”
A common assumption among scholars and modern lay persons is that Mormon temple theology appeared by revelation in Nauvoo in 1842. However, as these examples show, facets of temple worship developed much earlier – many appearing in 1830, and showing signs of seminal influence from the Book of Mormon translation project of 1828-29. As Don Bradley said of his research on the lost Book of Lehi: “When we look and see some of the clues to what was in [the book of Lehi], it is already anticipating things that some people, including previously myself, considered to be a later development in Nauvoo-era Mormonism and thus not present in the Book of Mormon. And yet what we see from the clues is that “Nauvoo Mormonism,” “temple Mormonism,” is original and literal [early] Mormonism—it’s the very faith propounded by Mormon in his book, beginning with its lost opening, the Book of Lehi.”
Freemasons talked a lot about temples, the New Israelites (Wood Scrape) were said to have wanted to build a temple, and Jane Lead goes on and on about the subject. http://juvenileinstructor.org/jane-lead-and-the-restoration-or-in-praise-our-heavenly-mother/
Here’s a quote: “For before his own distinct and personal Appearance, his Birth of Power will be first brought forth in some chosen Vessel, or Vessels; as Moses, Joshua, and Aaron, were Types, anointed to be Heads and Leaders unto the rest, to bring them into the Promised Land…. Where the New and Living Priesthood shall according to the Covenant, and Law of the Spirit of Life, be officiously and effectually performed … within the Walls of the New Jerusalem when it comes down upon the Earth, and by them be offered up as a most perfect Sacrifice in the New Temple. For it was given me to understand and know in very Truth, that such an holy Order of Priests should be Anointed.” Jane Lead, A Message to the Phildelphian Society, Whithersoever dispersed over the Whole Earth. Together with a Call to the Several Gathered Churches among Protestants in this Nation of England (London 1696).
So these ideas were around.
Should note the Art of Memory in its various phases has a lot to do with this. The idea is more or less mnemonic techniques for remembering based upon physical location of spaces. So think imagining a building and then moving through the building into different rooms with different objects/acts in each room. This was likely a big influence on masonry although I think as a more abstract general cognitive strategy it also plays into things. This idea of space/memory also can be seen in ritual and even visions. In the medieval era the art of memory often involved explicit treatment of these vision building/spaces as temples.
What’s interesting in the transition from the Kirtland endowment to the Nauvoo endowment is that it’s not just about becoming priests and a priesthood but also kingship. But the idea that both of these involve ritual is rather prominent in the Book of Mormon. Benjamin as Gerald in the OP notes for Kingship (largely following the ANE and Hebrew form) in the Book of Mormon. The priestly initiations aren’t described much but clearly they are there (see Alma 11-14)
[…] the keeper of the gate is the Holy One of Israel; and he employeth no servant there; and there is none other way save it be by the gate; for he cannot be deceived, for the Lord God is his name. And whoso knocketh, to him will he open […]
— 2 Nephi 9:41-42