Numbers 4:41-43

New Revised Standard Version, Anglicised Catholic Edition

⁴¹ This was the enrolment of the clans of the Gershonites, all who served at the tent of meeting, whom Moses and Aaron enrolled according to the commandment of the Lord.

⁴² The enrolment of the clans of the Merarites, by their clans and their ancestral houses, ⁴³ from thirty years old up to fifty years old, everyone who qualified for work relating to the tent of meeting—