Numbers 3:28
According to the number of all the males, from a month old and upward, there were eight thousand and six hundred, keeping the charge of the sanctuary.
Numbers 3:7
And they shall keep his charge, and the charge of the whole congregation before the tent of meeting, to do the service of the tabernacle.
Numbers 3:31
And their charge shall be the ark, and the table, and the candlestick, and the altars, and the vessels of the sanctuary with which they minister, and the screen, and all the service of it.
Numbers 4:35-36
from thirty years old and upward even to fifty years old, each man who entered upon the service, for work in the tent of meeting.