Numbers 1:49-51

Darby Translation

⁴⁹ Only thou shalt not number the tribe of Levi, neither take the sum of them among the children of Israel.

⁵⁰ But thou, appoint the Levites over the tabernacle of testimony, and over all the vessels thereof, and over all things that belong to it: they shall bear the tabernacle, and all its vessels; and they shall serve it, and round about the tabernacle shall they encamp;

⁵¹ and when the tabernacle setteth forward, the Levites shall take it down; and when the tabernacle encampeth, the Levites shall set it up; and the stranger that cometh near shall be put to death.