Ithamar was the son of Aaron, and his descendants formed a priestly lineage for generations.
Exodus 6:23The sons of Korah: Assir, and Elkanah, and Abiasaph; these are the families of the Korahites.
Exodus 28:1You shall make holy garments for Aaron your brother, for glory and for beauty.
Exodus 38:21Bezalel the son of Uri, the son of Hur, of the tribe of Judah, made all that Yahweh commanded Moses.
Numbers 4:21“Take a census of the sons of Gershon also, by their fathers’ houses, by their families;Numbers 4:22you shall count them from thirty years old and upward until fifty years old: all who enter in to wait on the service, to do the work in the Tent of Meeting.Numbers 4:23“This is the service of the families of the Gershonites, in serving and in bearing burdens:Numbers 4:24they shall carry the curtains of the tabernacle and the Tent of Meeting, its covering, the covering of sealskin that is on it, the screen for the door of the Tent of Meeting,Numbers 4:25the hangings of the court, the screen for the door of the gate of the court which is by the tabernacle and around the altar, their cords, and all the instruments of their service, and whatever shall be done with them. They shall serve in there.Numbers 4:26At the commandment of Aaron and his sons shall be all the service of the sons of the Gershonites, in all their burden and in all their service; and you shall appoint their duty to them in all their responsibilities.Numbers 4:27This is the service of the families of the sons of the Gershonites in the Tent of Meeting. Their duty shall be under the hand of Ithamar the son of Aaron the priest.Numbers 4:28“As for the sons of Merari, you shall count them by their families, by their fathers’ houses;Numbers 4:29you shall count them from thirty years old and upward even to fifty years old—everyone who enters on the service, to do the work of the Tent of Meeting.Numbers 4:30This is the duty of their burden, according to all their service in the Tent of Meeting: the tabernacle’s boards, its bars, its pillars, its sockets,Numbers 4:31the pillars of the court around it, their sockets, their pins, their cords, with all their instruments, and with all their service. You shall appoint the instruments of the duty of their burden to them by name.Numbers 4:32This is the service of the families of the sons of Merari, according to all their service in the Tent of Meeting, under the hand of Ithamar the son of Aaron the priest.”Numbers 4:33Moses and Aaron and the princes of the congregation counted the sons of the Kohathites by their families, and by their fathers’ houses,
1 Chronicles 24:1But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest’s office.1 Chronicles 24:2David with Zadok of the sons of Eleazar and Ahimelech of the sons of Ithamar, divided them according to their ordering in their service.1 Chronicles 24:3There were more chief men found of the sons of Eleazar than of the sons of Ithamar); and they were divided like this: of the sons of Eleazar there were sixteen, heads of fathers’ houses; and of the sons of Ithamar, according to their fathers’ houses, eight.1 Chronicles 24:4Thus they were divided impartially by drawing lots; for there were princes of the sanctuary, and princes of God, both of the sons of Eleazar, and of the sons of Ithamar.1 Chronicles 24:5Shemaiah the son of Nethanel the scribe, who was of the Levites, wrote them in the presence of the king, the princes, Zadok the priest, Ahimelech the son of Abiathar, and the heads of the fathers’ households of the priests and of the Levites; one fathers’ house being taken for Eleazar, and one taken for Ithamar.1 Chronicles 24:6Now the first lot came out to Jehoiarib, the second to Jedaiah,
Ezra 8:2Of the sons of Shecaniah, of the sons of Parosh, Zechariah; and with him were listed by genealogy of the males one hundred fifty.