Numbers 4:22-24

Modern English Version

²² Take also the sum of the sons of Gershon, throughout the houses of their fathers, by their families. ²³ From thirty years old and older to fifty years old you will number them, all that enter in to perform the service, to do the work in the tent of meeting.

²⁴ This is the service of the families of the Gershonites, to serve, and to work.