Numbers 4:22-24

Amplified Bible

²² “Take a census of the sons of Gershon also, by their fathers’ households, by their families. ²³ From thirty years and upward 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 carrying [when on the march]: