3:17 These were the sons of Levi by their names: Gershon, Kohath, and Merari.
3:18 These are the names of the sons of Gershon by their families: Libni and Shimei. 3:19 The sons of Kohath by their families were: Amram, Izhar, Hebron, and Uzziel. 3:20 The sons of Merari by their families were Mahli and Mushi. These are the families of the Levites by their clans.
3:21 From Gershon came the family of the Libnites and the family of the Shimeites; these were the families of the Gershonites.