Numbers 26:54-58
English Standard Version
Chapter 26
54To a large tribe you shall give a large inheritance, and to a small tribe you shall give a small inheritance; every tribe shall be given its inheritance in proportion to its list. 55But the land shall be divided by lot. According to the names of the tribes of their fathers they shall inherit. 56Their inheritance shall be divided according to lot between the larger and the smaller."
57This was the list of the Levites according to their clans: of Gershon, the clan of the Gershonites; of Kohath, the clan of the Kohathites; of Merari, the clan of the Merarites.
58These are the clans of Levi: the clan of the Libnites, the clan of the Hebronites, the clan of the Mahlites, the clan of the Mushites, the clan of the Korahites. And Kohath was the father of Amram.