במדבר, פרק ד׳, פסוק מ״ה

The final census of the Levite families focuses on the family of Merari, bringing their specific duties within the Tabernacle camp into sharp relief. Their primary responsibility was to guard the sanctuary. The commentators explain that this duty went far beyond providing basic security against thieves. Rather, guarding the Tabernacle was an essential commandment meant to honor and elevate the sacred space.

A notable aspect of this duty was the direct, personal involvement of Moses. He did not merely delegate this task; he actively participated alongside the family of Merari. Moses served as the head of the guards, joining them in the physical night watch over the Tabernacle.

This hands-on participation sheds light on the precise division of labor among the Levite families. Each family had a strictly defined role. The family of Kohath was in charge of singing during the day, a highly skilled craft requiring deep study and dedication. Moses shared in this duty as well, serving as a singer. Meanwhile, the family of Gershon was responsible for gatekeeping, specifically opening and closing the gates of the Tabernacle.

According to Jewish law, a Levite whose primary role is singing who oversteps into the role of a gatekeeper commits a severe offense punishable by death. Because Moses already functioned as a singer during the day and a guard at night, he was absolutely forbidden from taking part in the gatekeeping duties of the Gershonites. This strict separation of duties explains a distinct pattern in the historical record. The accounts of the Kohathite and Merarite censuses specifically highlight Moses's direct involvement, reflecting his active partnership in their work. However, any indication of his participation is completely absent from the account of the Gershonites, maintaining the severe boundary between their sacred tasks.