The command to observe the Sabbath is a recurring theme, but its placement directly within the instructions for building the Tabernacle carries a profound message. Constructing the sanctuary is a heavenly task of immense importance, yet it does not override the Sabbath. Unlike commandments that are strictly bound to a specific time, the building of the Tabernacle can be delayed to the weekdays. Consequently, even a person engaged in the holy work of erecting the sanctuary on the Sabbath bears ultimate guilt [ספורנו, רש״ר הירש].
When addressing the six days of labor, the text frames the work passively, indicating that work shall simply be done rather than actively commanding the people to work. The primary approach among commentators views this subtle shift as pointing to an ideal state. When the Israelites fully align with God's will, their labor is performed by others, or even the supreme construction of the Tabernacle happens on its own. In such a reality, the weekdays themselves take on a certain quality of rest from toil, which elevates the Sabbath to an even higher spiritual dimension [תורה תמימה, מלבי״ם, חזקוני, שפתי כהן, פרדס יוסף].
This elevated state is reflected in the intense description of the day as a complete and absolute rest. Rather than a temporary pause, this signifies a permanent and deeply significant tranquility [רש״י, שד״ל, שפתי חכמים]. It demands a stricter cessation of activity than the holidays, prohibiting even the preparation of food [שד״ל]. It also requires stepping away from actions that might not strictly be defined as complete labor by Jewish law, ensuring a person is entirely free from mundane matters [ספורנו]. Alternatively, one perspective suggests that the intense phrasing actually serves to limit restrictions. In the context of a divine commandment like building the Tabernacle, there is no need to add extra Sabbath time beyond the mandatory obligation [העמק דבר].
The Sabbath is defined by its holiness to God. This holiness represents a complete detachment from the fleeting concerns of the moment in order to dedicate time to eternal life, delighting in God and deepening one's understanding of His truth [ספורנו, ביאור יש״ר]. The rest is not merely a physical break designed to gather strength for the upcoming workweek; it is a spiritual cessation observed for the sake and honor of the Creator [רש״י, פרדס יוסף]. Furthermore, this holiness was established by God during the six days of creation. It remains fixed and permanent, standing in sharp contrast to the holiness of the festivals, which depends entirely on the declaration of a human court [תורה תמימה, מלבי״ם].
The prohibition against labor carries a severe warning of death. In this context, prohibited labor is defined as any action that involves an act of creation, and it is not necessarily measured by the amount of physical effort exerted [ביאור שטיינזלץ]. The primary categories of these creative acts are known through tradition [אבן עזרא הקצר]. The severe penalty applies to someone who performs such labor publicly [אבן עזרא], regardless of whether the action was for personal needs or for a high spiritual purpose like building the Tabernacle [אבן עזרא הקצר, רש״ר הירש], and in some cases, even if the labor was performed indirectly [צפנת פענח].
A unique interpretive approach applies these instructions to a traveler wandering in the desert who has lost count of the days and no longer knows when the Sabbath falls. In such a scenario, the individual is instructed to count six days during which only the labor absolutely essential for survival may be done. On the seventh day of this personal count, the traveler must cease their journey and sanctify the day. However, the severe penalty of death applies exclusively to one who performs labor on the true, objective Sabbath, and not to the traveler who accidentally violates the seventh day of their personal count [אור החיים].