Numbers 4:22-24

Darby Translation

²² Take also the sum of the sons of Gershon, according to their fathers' houses, after their families.

²³ From thirty years old and upward to fifty years old shalt thou number them; every one that cometh to labour in the work, to perform the service in the tent of meeting.

²⁴ This shall be the service of the families of the Gershonites, in serving, and in carrying: