1 Chronicles 24:2-4

The Voice

² The two oldest, Nadab and Abihu, died before their father did, and they had no sons. So Aaron’s youngest sons, Eleazar and Ithamar, became the priests.

³ King David, with the help of Zadok (from the line of Eleazar) and Ahimelech (from the line of Ithamar), divided the Levites by the duties they performed in the temple. ⁴ Since the descendants of Eleazar boasted more chiefs than the descendants of Ithamar did, the three men divided the Levites accordingly. In Eleazar’s line, sixteen families were distinguished, in Ithamar’s line, eight families were distinguished.