Numbers 4:1-3

English Standard Version

Duties of the Kohathites, Gershonites, and Merarites

4 The Lord spoke to Moses and Aaron, saying, ² “Take a census of the sons of Kohath from among the sons of Levi, by their clans and their fathers' houses, ^3 (A)from thirty years old up to fifty years old, all who can come on duty, to do the work in the tent of meeting.