Numbers 4:37-39

New Revised Standard Version Catholic Edition

³⁷ This was the enrollment of the clans of the Kohathites, all who served at the tent of meeting, whom Moses and Aaron enrolled according to the commandment of the Lord by Moses.

³⁸ The enrollment of the Gershonites, by their clans and their ancestral houses, ³⁹ from thirty years old up to fifty years old, everyone who qualified for work relating to the tent of meeting—