Moshe gathers the Jews and speaks first of Shabbos and then of the Mishkan; which is the opposite of how Hashem inspired him, where Shabbos was last.
The Rebbe explains that these Pesukim are describing Hakhail; where the first step is Shabbos: Bittul followed by bringing Hashem into each aspect of life: The Bais HaMikdash. MP3
