1
The courses of the sons of Aaron [were these]. The sons of Aaron: Nadab and Abihu, Eleazar and Ithamar.
2
But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest`s office.
3
David with Zadok of the sons of Eleazar, and Ahimelech of the sons of Ithamar, divided them according to their ordering in their service.