Numbers 4:23
King James Version
“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.”
Context
20But they shall not go in to see when the holy things are covered, lest they die.
21And the LORD spake unto Moses, saying,
22Take also the sum of the sons of Gershon, throughout the houses of their fathers, by their families;
23From 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.
24This the service of the families of the Gershonites, to serve, and for burdens:
25And they shall bear the curtains of the tabernacle, and the tabernacle of the congregation, his covering, and the covering of the badgers’ skins that above upon it, and the hanging for the door of the tabernacle of the congregation,
26And the hangings of the court, and the hanging for the door of the gate of the court, which by the tabernacle and by the altar round about, and their cords, and all the instruments of their service, and all that is made for them: so shall they serve.