Numbers 4:22-24

Amplified Bible, Classic Edition

²² Take a census of the sons of Gershon, by their fathers’ houses, by their families.

²³ From thirty years old and up to fifty years old you shall number them, all who enter for service to do the work in the Tent of Meeting.

²⁴ This is the service of the families of the Gershonites, in serving and in bearing burdens [when on the march]: