Numbers 4:43 in the King James Version
From thirty years old and upward even unto fifty years old, every one that entereth into the service, for the work in the tabernacle of the congregation,
Context
42 Those who were counted of the families of the sons of Merari, by their families, by their fathers’ houses,
43 from thirty years old and upward even to fifty years old—everyone who entered into the service for work in the Tent of Meeting,
44 even those who were counted of them by their families, were three thousand two hundred.