Numbers 4:3-5

New Life Version

³ from thirty years old and older, even to fifty years old. Number all who are able to do the work in the meeting tent. ⁴ This is the work of the sons of Kohath in the meeting tent to do with the most holy things. ⁵ When the people leave to move on, Aaron and his sons will go in and take down the curtain in front of the special box with the Law inside. And they will cover the special box with it.