Numbers 4:47 in the King James Version
From thirty years old and upward even unto fifty years old, every one that came to do the service of the ministry, and the service of the burden in the tabernacle of the congregation,
Context
46 All those who were counted of the Levites whom Moses and Aaron and the princes of Israel counted, by their families and by their fathers’ houses,
47 from thirty years old and upward even to fifty years old, everyone who entered in to do the work of service and the work of bearing burdens in the Tent of Meeting,
48 even those who were counted of them, were eight thousand five hundred eighty.