Aaron's youngest son by Elisheba, Ithamar and his 2 brothers, Nadab andAbihu, were appointe d priests by Moses at the same time that Aaron wasappointed. After Nadab and Abihu died fro m dabbling in strange cults,Ithamar was responsible for the tabernacle during the wildernessw anderings. In succeeding generations Ithamar's descendants played keyparts in Israel's histo ry as guardians of the Ark, high priests, andpriests in the Temple. (Everyone in the Bible , by William P. Barker;1966)