Numbers 4:15
4:15 “When Aaron and his sons have finished covering the sanctuary and all the furnishings of the sanctuary, when the camp is ready to journey, then the Kohathites will come to carry them; but they must not touch any holy thing, or they will die. These are the responsibilities of the Kohathites with the tent of meeting.
Numbers 4:24
4:24 This is the service of the families of Gershonites, as they serve and carry it.
Numbers 4:37
4:37 These were those numbered from the families of the Kohathites, everyone who served in the tent of meeting, whom Moses and Aaron numbered according to the word of the Lord by the authority of Moses.