Behold it is known that a person has to look forward towards the salvation of Hashem that the Glory of his Kingdom will be revealed in the world. As our sages stated (Shabbat 31a) that the (heavenly court) asks a person at the time of judgement, “did you look forward to my salvation?” [and as Rashi explained there to the words of the prophets]; and when a person does not do so, the Holy One Blessed be He, complains about him as we find in the Pesikta (Pesikta Rabbati, 35:2) on the word “Gili”, that the Holy One Blessed Be He, states to the righteous of each and every generation, you did not do well, you cherished my Torah but you did not wait for my Kingdom. And by default upon the Cohanim there is certainly an obligation to learn the laws of the sacrificial service, for definitely when the time comes immediately they will have demands from the Cohanim over this. Now similar to this situation was at the start of the 2nd Temple, that it was told to them by Chaggai the prophet, please ask of the Cohanim, Torah [Pesachim 16b, Chaggai 2:11]. [And even though, over there, the laws of impurity and purity were mentioned, however it is safe to assume that he asked them also about matters of holiness, and the Temple]. Now in truth it is also an obligation upon Talmudic scholars who are regular Israelites (that are not Cohanim) to learn these laws. [This excerpt is from the Chafetz Chaim’s introduction to the book Avodat Hakorbanot].
An Excerpt from the Temple Institute Web Site
https://templeinstitute.org/about-us/#Research
Research Department
A team of rabbis, scholars, scientists and other experts in various fields are presently occupied with the study of various Temple-related subjects. The results of these studies are published periodically by the Temple Institute.
The conclusions of this research form the basis for the creation of the sacred vessels and priestly garments that are fashioned by the Institute’s Restoration Department, comprised of experts representing a wide range of fields and professions: gold and silversmiths, weavers, gemologists, musicologists, carpenters, painters, graphic artists, architects and more.
These craftsmen prepare their work based on the findings and conclusions presented to them by the scholars of the Research Department. Once the plans for the vessel or item have been completed, the craftsman or artist sets about the execution of the project accordingly, with his own emphasis on the artistic aspects.
In this manner, over sixty sacred Temple vessels have already been restored, including some of the most difficult and complicated projects, such as the Menorah and the precious stones of the High Priest’s breastplate. The stones of the breastplate – recently created – were investigated with the help of professional gemologists, geologists and other experts. The wide range of material necessitated the examination of over 30 differing viewpoints for establishing the criteria for identifying the stones.
Another example of research currently underway involves the topography and makeup of the Temple Mount and the structure of the Holy Temple, as well as a working architectural plan for the rebuilding of the Holy Temple on Mount Moriah, according to modern building standards and with the best materials and technology available.
A panel of experts has labored to assemble all relevant data and sources from the Talmud and commentaries as well as from historical writings and archaeological sources which aid in pinpointing the exact halachic location of the sanctified Temple Mount area. The same efforts are made to establish the proper location of the structure of the Temple and all of its chambers.
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