Numbers 7:9

But to the sons of Caath he gave them not, because they have the ministrations of the sacred things: they shall bear them on their shoulders.

But unto the sons of Kohath he gave none: because the service of the sanctuary belonging unto them was that they should bear upon their shoulders.

But to the sons of Kohath he gave none, because the service of the sanctuary belonged to them; they carried it on their shoulders.