By Rabbi Nathan Lopes Cardozo
There is no stronger reminder of the holiness of the Sabbath than the categorical imperative not to violate this day while building the Tabernacle and later the Temple. While the children of Israel are commanded to build this most sacred place on earth symbolizing the encounter between the Divine and man, G-d makes it clear that the Sabbath is still not to be violated. There is a need to stop this holy work, even in the middle, to make space for this holy day: It is more holy than the Tabernacle and (later) the Temple.
Listen, if you will, to the Divine's exact words: ..." read the rest here