Transitioning the Tabernacle from a stationary sanctuary to a mobile camp requires meticulous preparation, highlighting the fragile boundary between the sacred and the mundane. The dismantling process begins in the Holy of Holies, where extreme care is taken to conceal the most sacred vessels before they journey into the wilderness. The exact moment packing commences is dictated by the departure of God's cloud from the Tabernacle [רש״י, ספורנו, הכתב והקבלה]. Until the cloud lifts, entering the sanctuary remains strictly forbidden [ספורנו]. Furthermore, it would be disrespectful to delay the packing until the lead camp of Judah physically begins to march, as this would make it appear as though the movement of the tribes forced the dismantling of the sanctuary [שפתי חכמים, מזרחי]. In practice, the Levites tasked with transporting the vessels only set out after the first two tribal camps are already on the move [רשב״ם, גור אריה].
The responsibility of preparing the vessels falls exclusively on Aaron and his sons, who enter the sanctuary to place each item into its designated casing [רש״י, ברכת אשר]. This ensures that the Kohathite Levites, whose duty is solely to carry the vessels, neither touch nor gaze upon the holy objects [רש״י, רלב״ג]. Far from a mere technical chore, this packing process constitutes a deeply significant priestly service in its own right [רש״ר הירש]. Conceptually, Aaron acts as a devoted attendant. While the sacred vessels remain hidden from the public eye, they are revealed to him, and his task is akin to covering the face of a bride before she steps outside [שפתי כהן].
The dismantling begins by lowering the partitioning veil that normally separates the Holy from the Holy of Holies and shields the Ark [אבן עזרא, ביאור שטיינזלץ]. This veil, possessing its own inherent holiness, serves as the Ark's first layer of covering [ביאור שטיינזלץ, חזקוני]. Preparing the Ark also involves arranging its carrying poles. Because it is permanently forbidden to remove these poles from the Ark, the priests do not insert them anew, but rather adjust and ready them for transport [רש״ר הירש, דעת זקנים, מלבי״ם].
A fundamental distinction exists between how the Ark is covered compared to the rest of the Tabernacle's vessels. While other items, such as the table, the menorah, and the altars, are first wrapped in a colored cloth and then protected by an outer layer of animal skin for the journey, the Ark's arrangement is reversed. After the initial veil, the animal skin is placed, and finally, a cloth of pure blue is spread over the very top, remaining entirely visible [רבנו בחיי, רש״ר הירש, מלבי״ם].
This outer blue layer carries profound meaning. Blue symbolizes the pure essence of the heavens and alludes to the Divine Throne. The Ark's holiness is so immense that it radiates outward, requiring an outer garment that expresses an immediate closeness to God [רבנו בחיי, מלבי״ם, רש״ר הירש]. Additionally, the color serves as a spiritual protection against negative influences [שפתי כהן] and represents the attribute of divine justice contained within the Written Torah housed inside the Ark [רקנאטי]. The other vessels are similarly wrapped in colors reflecting their specific functions. The table, representing physical sustenance, is covered in crimson red to express material vitality, while the sacrificial altar is draped in purple, evoking the blood of offerings and the spiritual awe associated with Isaac [רש״ר הירש, רקנאטי, שפתי כהן].
Beneath the technical details of concealing these sacred objects lies a deeper spiritual message. The deliberate covering of the holy vessels teaches that God desires His presence to be recognized specifically within the barren wilderness of the material world. Although embarking on a journey requires veiling the intense spiritual illumination of the sanctuary, the Ark and the Torah it holds must always be carried along. This divine awareness is meant to accompany the people even into the darkest moments of exile, illuminating the world from within [חומש קה״ת].