^{1 Ref} And the courses of the sons of Aaron `were these'. The sons of Aaron: Nadab and Abihu, Eleazar and Ithamar.

^{2 Ref} But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest's office.

^{3 Ref} And David with Zadok of the sons of Eleazar, and Ahimelech of the sons of Ithamar, divided them according to their ordering in their service.