וביום השביעי יהיה לכם קדש שבת שבתון לד'
The various commands and admonishments concerning Shabbos Kodesh are reiterated in the Torah a number of times. This clearly indicates the overriding significance of Shabbos to Klal Yisrael. In the beginning of our parsha, as Moshe Rabbeinu assembles Klal Yisrael to instruct them about the building of the Mishkan, he prefaces his talk with a reminder about Kedushas Shabbos, the sanctity of the seventh day. Chazal derive from here that the building of the Mishkan does not supersede the mitzvah of Shabbos. Interestingly, the avodas ha’korban, sacrificial service, was performed on Shabbos. The holy day was “set aside” for the holy…