Exodus 6:23-25

New Century Version

²³ Aaron married Elisheba, the daughter of Amminadab and the sister of Nahshon. Elisheba gave birth to Nadab, Abihu, Eleazar, and Ithamar.

²⁴ The sons of Korah were Assir, Elkanah, and Abiasaph. These are the family groups of the Korahites.

²⁵ Eleazar son of Aaron married a daughter of Putiel, and she gave birth to Phinehas.

These are the leaders of the family groups of the Levites.