“The sons of Aaron were Nadab, Abihu, Eleazar, and Ithamar.”
Once again, this is based on Exodus, chapter 6. Notice that this biblical author does not follow the genealogy of Moses, but rather his brother Aaron, since there is no mention of Moses, his wife or children in this genealogy. This is where the connection of the family of Levi and the cult gets its beginnings. The family of Aaron not Moses will lead to the Yahweh Levite priests. Aaron married Elisheba, the daughter of Amminadab and sister of Nahshon. They had four sons, (1) Nadab, (2) Abihu, (3) Eleazar, and (4) Ithamar. Elisheba’s brother Nahshon had an important role in the Exodus since he was the bother-in-law of Aaron. Both Nadab and Abihu met a very violent fiery death in the desert journey in Leviticus, chapter 10, for using bad incense and making an unholy fire. Eleazar married the daughter of Putiel and they had a son called Phinehas. He was important because his two older brothers died childless. For some reason the high priest will pass through Ithamar as he was put in charge of the tabernacle.