The Third Temple

"Like everything that I show you, the form of the Mishkan / Tabernacle and the form of all its vessels; and so shall you do." (25:9)
Rashi comments: "And so shall you do"-- for future generations.
R' Eliezer Zusia Portugal z"l (the Skulener Rebbe) asks: How can building a Temple be a mitzvah for future generations when, at least according to some opinions, the Third Temple will descend from Heaven as a building of fire?
He answers: The Temple that will descend is being constructed all the time from our mitzvot. Every good deed adds a course of "bricks" to that Temple. This verse is commanding us to do those good deeds. (Noam Eliezer)

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