Numbers 1:49-51

Amplified Bible, Classic Edition

⁴⁹ Only the tribe of Levi you shall not number in the census of the Israelites.

⁵⁰ But appoint the Levites over the tabernacle of the Testimony, and over all its vessels and furnishings and all things that belong to it. They shall carry the tabernacle [when journeying] and all its furnishings, and they shall minister to it and encamp around it.

⁵¹ When the tabernacle is to go forward, the Levites shall take it down, and when the tabernacle is to be pitched, the Levites shall set it up. And the excluded [any not of the tribe of Levi] who approach the tabernacle shall be put to death.