1 Aaron's descendants were then divided into work groups. Aaron had four sons: Nadab, Abihu, Eleazar, and Ithamar.
2 But Nadab and Abihu died long before their father, without having any sons. That's why Eleazar and Ithamar served as priests.
3 David divided Aaron's descendants into groups, according to their assigned work. Zadok, one of Eleazar's descendants, and Ahimelech, one of Ithamar's descendants, helped David.
4 Eleazar's descendants were divided into sixteen groups, and Ithamar's were divided into eight groups, because Eleazar's family included more family leaders.
5 However, both families included temple officials and priests, and so to make sure the work was divided fairly, David asked God what to do.