Numbers 3:17-20

¹⁷And these were the sons of Levi by their names: Gershon, and Kohath, and Merari. ¹⁸And these are the names of the sons of Gershon by their families: Libni and Shimei. ¹⁹And the sons of Kohath by their families: Amram, and Izhar, Hebron, and Uzziel. ²⁰And the sons of Merari by their families: Mahli and Mushi. These are the families of the Levites according to their fathers` houses.