Numbers 3:19-27

19And the sons of Kohath according to their families: Amram and Izhar, Hebron and Uzziel.

20And the sons of Merari according to their families: Mahli and Mushi. These are the families of the Levites according to their fathers' houses.

21Of Gershon, the family of the Libnites, and the family of the Shimites: these are the families of the Gershonites.

22Those that were numbered of them, according to the number of all the males, from a month old and upward, those that were numbered of them were seven thousand five hundred.

23The families of the Gershonites encamped behind the tabernacle westward.

24And the prince of the father's house of the Gershonites was Eliasaph the son of Lael.

25And the charge of the sons of Gershon in the tent of meeting was: the tabernacle and the tent, its covering, and the curtain of the entrance to the tent of meeting.

26And the hangings of the court, and the curtain of the entrance to the court, which surrounds the tabernacle and the altar, and the cords thereof for all its service.

27And of Kohath, the family of the Amramites, and the family of the Izharites, and the family of the Hebronites, and the family of the Uzzielites: these are the families of the Kohathites.