Numbers 17:2

17:2 “Speak to the Israelites, and receive from them a staff from each tribe, one from every tribal leader, twelve staffs; you must write each man’s name on his staff.

Numbers 18:2

18:2 “Bring with you your brothers, the tribe of Levi, the tribe of your father, so that they may join with you and minister to you while you and your sons with you are before the tent of the testimony.

Numbers 26:58

26:58 These are the families of the Levites: the family of the Libnites, the family of the Hebronites, the family of the Mahlites, the family of the Mushites, the family of the Korahites. Kohath became the father of Amram.

Numbers 36:4

36:4 And when the Jubilee of the Israelites is to take place, their inheritance will be added to the inheritance of the tribe into which they marry. So their inheritance will be taken away from the inheritance of our ancestral tribe.”