ויקהל משה את-כל-עדת בני ישראל ויאמר אלהם אלה הדברים אשר-צוה יקוק לעשת אתם: ששת ימים תעשה מלאכה וביום השביעי יהיה לכם קדש שבת שבתון וגו’
Moshe congregated the assembly of Israel and said to them: “These are the matters to which Hashem commanded, to perform them: Six days your work shall be done, and the seventh day shall be Holy, a shabbos of rest…
This week’s parsha begins with a strange combination of verses. First, we are told that what follows are the commands which Hashem expects us to perform. Then, we are warned against performing work on shabbos. This is telling us not to do something. This anomaly forces us to read the verses in their proper context. This parsha details the vessels and materials that went into the creation of the Mishkan. What this verse is referring to is that the Jews were adjured to construct the Mishkan and all that went into it. However, the verse is followed by another command: to observe shabbos properly by refraining from work. We learn from here that the very constructive activities that go into the creation of the Mishkan are the forms of creative labor which are forbidden on shabbos.
This understanding by our Sages goes further than expected. Not only are the acts of construction for the Mishkan forbidden on shabbos, they are the sole criteria for defining what the Torah means by “work”. That is, anything that wasn’t involved in the creation of the Mishkan, is permissible on shabbos. Furthermore, acts similar to those involved in the Mishkan, if they are lacking the essential characteristics of that particular form of labor, are permitted on a Torah level (although usually forbidden Rabbinically). For example: digging a hole in the ground for agricultural purposes is forbidden, as that is what they did for the Mishkan. However, digging a hole to retrieve and use the dirt, is permissible (again, on a Torah level). This begs the question: if the purpose of shabbos was to give us a day of rest, why did Hashem make the forbidden labors dependent on what was necessary for the Mishkan, regardless of their necessary level of exertion? Why is it so dependent that the same act, with the slightest of changes, can change from absolutely forbidden to completely permissible?
It is revealed in many sources, some of them exegetical, some of them more esoteric and Kabbalistic, that the Mishkan wasn’t just a portable Temple structure for the Jews’ travels in the wilderness. It was a microcosm of the universe, and of all the sub-universes within, both the spiritual and the physical. Its physical structure was aligned with all the aspects of the spiritual and physical universe. Not only that, but Betzalel, the chief architect of the Mishkan, used the very acts that went into the creation of the universe to create the Mishkan.
What’s the essence of the day of rest known as shabbos? It’s testimony that there’s a Creator in this world. The Torah tells us that He created the universe in six days and rested on the seventh. This “rest” meant cessation from creative activities. By following suit throughout or lives, by working throughout the week, being involved in creative tasks, and resting on the seventh day, we are mimicking our Creator. By doing so we are demonstrating our belief that Hashem created the universe.
If so, Hashem wants us to rest from the very creative activities that He used to create the universe. Only then will there be proper testimony through observing shabbos. However, how could we ever know which creative acts were used to create and form the universe? We learn it from the Mishkan. It’s form and structure are a microcosm of the universe, and it was constructed the same way as the universe. By studying and observing the creative labor that went into the Mishkan, we can deduce how to properly observe shabbos. Doing so will testify to all that there is a Creator, who rested on the seventh day.
 Based on Be’er Yosef to Exodus 35:1-2
 Exodus loc. cit.
 Mechilta ad. loc. See Ramban and Malbim ad. loc.
 Shemos Rabbah 33:4; Midrash Tanchuma Pekudei § 2. See also Megillah 10b
 Nefesh HaChaim 1:4
 Rabbeinu Bachaye to Exodus 25:9; Shnei Luchos HaBris Torah Shebiksav Terumah, Vayakhel and Pekudei
 Berachos 55a
 Mechilta to Exodus 20:14
 Genesis Chapter 1