Numbers 1:48-50

48For the Lord had spoken to Moses, saying,

49“Only the tribe of Levi 1you shall not number, nor shall you take their 2census among the sons of Israel.

50But you shall 3appoint the Levites over the 4tabernacle of the testimony, and over all its furnishings and over all that belongs to it. They shall carry the tabernacle and all its furnishings, and they shall take care of it; they shall also camp around the 5tabernacle.