Exodus 27:20--28:43

Aaron : a son of Amram; brother of Moses,son of Amram (Kohath Levi); patriarch of Israel's priests,the clan or priestly line founded by Aaron

Abihu : son of Aaron the high priest

Eleazar : a son of Eliud; the father of Matthan; an ancestor of Jesus.,a chief priest; son of Aaron,son of Abinadab; caretaker of the Ark at Kiriath-Jearim,son of Dodo the Ahohite; one of David's military elite,son of Mahli the Levite,a priest who participated in the dedication of the wall,a priest under Ezra; son of Phinehas,a layman of the Parosh clan who put away his heathen wife

Israel : a citizen of Israel.,a member of the nation of Israel

Ithamar : son of Aaron

Nadab : son of Aaron,son and successor of King Jeroboam,son of Shammai of Judah,son of Jeiel of Benjamin

Thummim : a system (or device) to obtain divine guidance (IBD)

Urim : a device to discern divine guidance, used with the "Thummim"