Numbers 18:3-5

New Living Translation

³ But as the Levites go about all their assigned duties at the Tabernacle, they must be careful not to go near any of the sacred objects or the altar. If they do, both you and they will die. ⁴ The Levites must join you in fulfilling their responsibilities for the care and maintenance of the Tabernacle,^[a] but no unauthorized person may assist you.

⁵ “You yourselves must perform the sacred duties inside the sanctuary and at the altar. If you follow these instructions, the Lord’s anger will never again blaze against the people of Israel.