Numbers 3:2-4

3:2 These are the names of the sons of Aaron: Nadab, the firstborn, and Abihu, Eleazar, and Ithamar. 3:3 These are the names of the sons of Aaron, the anointed priests, whom he consecrated to minister as priests.

3:4 Nadab and Abihu died before the Lord when they offered strange fire before the Lord in the wilderness of Sinai, and they had no children. So Eleazar and Ithamar ministered as priests in the presence of Aaron their father.

Numbers 3:19

3:19 The sons of Kohath by their families were: Amram, Izhar, Hebron, and Uzziel.

Numbers 3:27

The Numbering of the Kohathites

3:27 From Kohath came the family of the Amramites, the family of the Izharites, the family of the Hebronites, and the family of the Uzzielites; these were the families of the Kohathites.