Numbers 3:36-38

Young's Literal Translation

³⁶ And the oversight -- the charge of the sons of Merari -- [is] the boards of the tabernacle, and its bars, and its pillars, and its sockets, and all its vessels, and all its service,

³⁷ and the pillars of the court round about, and their sockets, and their pins, and their cords.

³⁸ And those encamping before the tabernacle eastward, before the tent of meeting, at the east, [are] Moses and Aaron, and his sons, keeping the charge of the sanctuary for the charge of the sons of Israel, and the stranger who cometh near is put to death.