Numbers 1:50-52

Young's Literal Translation

⁵⁰ and thou, appoint the Levites over the tabernacle of the testimony, and over all its vessels, and over all that it hath; they bear the tabernacle, and all its vessels, and they serve it; and round about the tabernacle they encamp.

⁵¹ `And in the journeying of the tabernacle, the Levites take it down, and in the encamping of the tabernacle, the Levites raise it up; and the stranger who is coming near is put to death.'

⁵² And the sons of Israel have encamped, each by his camp, and each by his standard, by their hosts;