במדבר, פרק א׳, פסוק נ״א

As the Israelites traveled through the desert, the tribe of Levi received an exclusive duty to maintain the holy boundaries of the Tabernacle. This responsibility required perfect order and a complete separation between those who served in the sanctuary and the rest of the nation. When it was time to move from one camp to the next, the Levites were tasked with taking the structure apart. This process was not a matter of lowering the Tabernacle from a high place to a low one, but rather a careful dismantling of its boards, pillars, and sockets. Once separated, the Levites carried these components to the next location and rebuilt the sanctuary. The job of dismantling and rebuilding was assigned exclusively to the Levites to ensure that no one would mistake the routine reassembly at each stop for the original construction of the Tabernacle, an event in which the entire nation participated [העמק דבר]. According to one perspective, the group responsible for taking down the structure also included the priests, who belong to the tribe of Levi. Their specific role was to cover the holy vessels before the rest of the Levites approached to carry them [ביאור יש״ר].

To protect the sanctity of this service, a strict boundary was established. Anyone who is not of Levite descent is considered an outsider to this task, a rule so absolute that even a king of Israel is forbidden from participating [תורה תמימה]. The primary approach among commentators goes further, suggesting that even priests are considered outsiders regarding this specific duty. Just as a Levite is forbidden from performing the priest's duties at the altar, a priest may not interfere with the Levite's task of dismantling and carrying the Tabernacle. This strict separation maintains clear borders between the sacred and the ordinary. The Levites function as a protective wall, guarding the Tabernacle against unauthorized involvement, much like a living body naturally defends itself against foreign elements [רש ר הירש, פירושן של נשים]. The restriction against approaching does not refer to merely entering the Tabernacle, but specifically forbids taking part in the physical work of taking it apart and setting it up [רש״י, מזרחי].

If an unauthorized person engages in this work, they face the death penalty, though opinions differ on how this is carried out. Most commentators [רש״י, מזרחי, הכתב והקבלה, ברטנורא] agree that this refers to death at the hands of Heaven. They base this on the specific phrasing of the penalty, which lacks the repetitive wording typically associated with earthly courts, and note that most capital offenses involving harm to the sanctuary are left to Heaven. On the other hand, some maintain [אבן עזרא, נתינה לגר] that an outsider who performs this work is judged by an earthly court and sentenced to death by strangulation.