Numbers 26:57-62

57These are those who were numbered of the Levites according to their families: of Gershon, the family of the Gershonites; of Kohath, the family of the Kohathites; of Merari, the family of the Merarites.

58These are the families of Levi: 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. And Kohath was the father of Amram.

59The name of Amram’s wife was Jochebed, the daughter of Levi, who was born to Levi in Egypt; and to Amram she bore Aaron, Moses, and Miriam their sister.

60To Aaron were born Nadab, Abihu, Eleazar, and Ithamar.

61But Nadab and Abihu died [in the presence of God] when they offered [in their ceremonial censers] strange [unholy, unacceptable, unauthorized] fire before the Lord.

62Those numbered of the Levites were 23,000, every male from a month old and upward; for they were not numbered among the sons of Israel, since no inheritance [of land] was given to them among the Israelites.