1 Chronicles 24:2-4

New Catholic Bible

² Nadab and Abihu died before their father, and they did not have any sons. Eleazar and Ithamar served as priests.

³ David, with the help of Zadok, a descendant of Eleazar, and Ahimelech, a descendant of Ithamar, divided them according to the responsibilities of their service.

⁴ A larger number of leaders was found among the descendants of Eleazar than among the descendants of Ithamar. This is how they were divided: for the descendants of Eleazar there were sixteen leaders of the ancestral clans, and for the descendants of Ithamar there were eight leaders of the ancestral clans.