Exodus 6:23-25

New Revised Standard Version, Anglicised

²³ Aaron married Elisheba, daughter of Amminadab and sister of Nahshon, and she bore him Nadab, Abihu, Eleazar, and Ithamar. ²⁴ The sons of Korah: Assir, Elkanah, and Abiasaph; these are the families of the Korahites. ²⁵ Aaron’s son Eleazar married one of the daughters of Putiel, and she bore him Phinehas. These are the heads of the ancestral houses of the Levites by their families.