Following extensive instructions for constructing the Tabernacle and its sacred vessels, a sudden pause shifts the focus to a strict warning regarding Sabbath observance. This pivot creates a sharp contrast between the holy labor of building a physical sanctuary and the sanctity of time itself, ultimately defining the core relationship between God and the Israelites.
The directive to deliver this message is pointed directly at Moses for several reasons. The primary approach among commentators explains that God is delivering a crucial warning: although Moses is entrusted with commanding the construction of the Tabernacle, he must not allow the people to dismiss the Sabbath. The urgency of building the sanctuary does not override the requirement to rest [רש״י, ספורנו, דעת זקנים, בכור שור]. Furthermore, Moses is required to deliver this warning personally, without relying on an intermediary [מלבי״ם, תורה תמימה]. This direct communication ensures that even the simplest laborers engaged in the construction fully grasp the severity of the prohibition [העמק דבר]. Because the written instructions are brief, Moses is also tasked with verbally transmitting the intricate, unwritten laws of the Sabbath, hinting at the necessity of the Oral Torah [אור החיים]. Additionally, since Moses was the one who originally initiated a day of rest for the Israelites during their enslavement in Egypt, it is deeply fitting that he is the one to command them regarding the Sabbath now [כלי יקר].
A subtle limitation embedded in the command leads to a profound debate among scholars about what exactly is being restricted. One perspective argues that the restriction applies to the construction of the Tabernacle. Despite the immense spiritual importance of the sanctuary, its construction must halt, as building is strictly forbidden on the day of rest [רש״י, חזקוני]. Conversely, many commentators completely reject this reading. They argue that grammatical rules dictate a restriction applies directly to the command it accompanies. Therefore, the limitation applies to Sabbath observance itself, revealing that there are specific circumstances where the Sabbath must be broken. Foremost among these is the obligation to save a human life [רמב״ן, תורה תמימה, מלבי״ם]. The underlying logic is that it is better to violate a single Sabbath for a sick person so that they may recover and observe many more Sabbaths in the future [אור החיים]. This principle of limitation also permits the Sabbath to be set aside for specific communal obligations, such as circumcision or public sacrifices [רבנו בחיי, קיצור בעל הטורים].
The instruction to observe the days of rest is delivered in the plural. On a practical level, this simply acknowledges the many Sabbaths that occur throughout the year [אבן עזרא, רמב״ן, רשב״ם], while also encompassing the various festivals, which are similarly designated as days of rest [העמק דבר, אור החיים]. On a deeper, conceptual level, the plural form alludes to two distinct eras of rest: the original Sabbath of creation, which celebrates the renewal of the world, and the ultimate future Sabbath, representing the World to Come [כלי יקר]. It also points to the dual nature of rest required on that day: the physical cessation of labor for the body, and the spiritual tranquility of the soul, which is to be dedicated to contemplation and the service of God [הכתב והקבלה].
Ultimately, the Sabbath serves as an exclusive symbol between God and the Israelites. It stands as a testament that God chose them and bequeathed His own day of rest to them [רש״י, רשב״ם, קאסוטו]. If the nation were to compromise this sacred sign, the entire endeavor of building the Tabernacle would be rendered meaningless, as there would be no suitable environment for the Divine Presence to dwell [ספורנו]. The awareness of this covenant reveals the Sabbath as a hidden gift, offering a fleeting taste of the World to Come. Just as a benefactor must inform a recipient of a gift so they can truly appreciate it, God ensures the Israelites recognize the profound value of this day [אור החיים, מלבי״ם]. Unlike the Tabernacle or the Temple, where feelings of holiness are stirred by the external grandeur of physical structures and vessels, the Sabbath generates an internal sanctity within the soul without any material aids. This demonstrates that it is God Himself who sanctifies humanity [העמק דבר]. Finally, this profound awareness establishes a clear hierarchy of values: the inherent holiness of an Israelite's soul surpasses even the holiness of the Sabbath, reinforcing the principle that the day of rest must always yield to the preservation of life [אור החיים].