Numbers 4:3-5

Good News Translation

³ and to register all the men between the ages of thirty and fifty who were qualified to work in the Tent of the Lord's presence. ⁴ Their service involves the most holy things.

⁵ The Lord gave Moses the following instructions. When it is time to break camp, Aaron and his sons shall enter the Tent, take down the curtain in front of the Covenant Box, and cover the Box with it.