Numbers 4:3-5

Modern English Version

³ from thirty years old and older, even to fifty years old, all that enter into the host, to do the work in the tent of meeting.

⁴ This will be the service of the sons of Kohath in the tent of meeting, concerning the holiest things. ⁵ And when the camp sets out, Aaron will come, and his sons, and they will take down the covering curtain, and cover the ark of the testimony with it,