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Rashi to the beginning of Vayakhel points out that despite its importance, the mishkan can not be built on Shabbos. However, we find that most karbanos can be brought on Shabbos, even though this violates a few melachos. What's the difference? (I'm looking for a more hashkafah-oriented answer.)

marked as duplicate by user4523, msh210 Mar 24 '14 at 17:37

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