Numbers 4:3

4:3 from thirty years old and upward to fifty years old, all who enter the company to do the work in the tent of meeting.

Numbers 4:13

4:13 Also, they must take away the ashes from the altar and spread a purple cloth over it.

Numbers 4:10

4:10 Then they must put it with all its utensils in a covering of fine leather, and put it on a carrying beam.

Numbers 4:39

4:39 from thirty years old and upward to fifty years old, everyone who entered the company for the work in the tent of meeting –