Exodus 6:14-19

These are the heads of their fathers’ houses: the sons of Reuben, the firstborn of Israel: Hanoch, Pallu, Hezron, and Carmi; these are the clans of Reuben. The sons of Simeon: Jemuel, Jamin, Ohad, Jachin, Zohar, and Shaul, the son of a Canaanite woman; these are the clans of Simeon. These are the names of the sons of Levi according to their generations: Gershon, Kohath, and Merari, the years of the life of Levi being 137 years. The sons of Gershon: Libni and Shimei, by their clans. The sons of Kohath: Amram, Izhar, Hebron, and Uzziel, the years of the life of Kohath being 133 years. The sons of Merari: Mahli and Mushi. These are the clans of the Levites according to their generations.