You'd think only the High Priest could go near the Ark, right? But in this instance, something extraordinary happens.
Normally, the space behind the inner curtain – the Holy of Holies – was entered only by the High Priest, and only once a year on the Day of Atonement. This was the most sacred space, where God's presence dwelled. However, when the Israelite camp was breaking down to move, Aaron and his sons were permitted to enter this restricted area. This wasn't a casual visit; it was a sacred duty. The divine cloud, signaling the camp's movement, had lifted from the Tabernacle, indicating God's presence was temporarily drawing back, allowing for this essential task of packing the sacred items.