1 Chronicles 24:2-4

Evangelical Heritage Version

² But because Nadab and Abihu died before their father and had no children, Eleazar and Ithamar served as priests.

³ David, together with Zadok, the representative of the male descendants of Eleazar, and Ahimelek, the representative of the male descendants of Ithamar, divided the priests into divisions to be assigned different forms of service.

⁴ Because the descendants of Eleazar had more men who were leaders of large groups than the descendants of Ithamar did, this is how the priests were divided: From the descendants of Eleazar there were sixteen heads of fathers’ houses, and from the descendants of Ithamar there were eight heads of their fathers’ houses.