Numbers 4:4, 15

This is the work and responsibility of the sons of Kohath in the Tent of Meeting (tabernacle): the most holy things.

When Aaron and his sons have finished covering the sanctuary and all its furniture, as the camp sets out, after all that [is done, but not before], the sons of Kohath shall come to carry them [using the poles], so that they do not touch the holy things, and die. These are the things in the Tent of Meeting (tabernacle) which the sons of Kohath are to carry.