Onam's descendants were Shammai and Jada. Shammai's descendants were Nadab and Abishur.

Nadab's descendants were Seled and Appaim. Seled died childless.

Amram's descendants included Aaron, Moses, and Miriam. Aaron's sons included Nadab, Abihu, Eleazar, and Ithamar.

His firstborn son was Abdon, then Zur, Kish, Baal, Nadab,

His firstborn son was Abdon, followed by Zur, Kish, Baal, Ner, Nadab,

With respect to the descendants of Aaron, classes of service were organized for Nadab, Abihu, Eleazar, and Ithamar, the descendants of Aaron.

But Nadab and Abihu died before their father did, leaving no sons, so Eleazar and Ithamar became priests.