Numbers 3:28
Counting every male from a month old and upward, there were 8,600. They were responsible for the care of the sanctuary.
Numbers 3:7
They are responsible for his needs and the needs of the whole community before the tent of meeting, by attending to the service of the tabernacle.
Numbers 3:31
Their responsibilities included the ark, the table, the lampstand, the altars, and the utensils of the sanctuary with which they ministered, the curtain, and all their service.
Numbers 4:35-36
from thirty years old and upward to fifty years old, everyone who entered the company for the work in the tent of meeting;