Numbers 4:23 WBT

²¹  And the LORD spoke to Moses, saying,

²²  Take also the sum of the sons of Gershon, throughout the house of their fathers, by their families;

²³  From thirty years old and upward until fifty years old shalt thou number them; all that enter in to perform the service, to do the work in the tabernacle of the congregation.

²⁴  This [is] the service of the families of the Gershonites, to serve, and for burdens:

²⁵  And they shall bear the curtains of the tabernacle, and the tabernacle of the congregation, its covering, and the covering of the badgers' skins that [is] above upon it, and the hanging for the door of the tabernacle of the congregation,