Who was the son of Aaron who became high priest after him?

The son of Aaron who became high priest after him was Eleazar. Before Aaron’s death on Mount Hor, Moses transferred Aaron’s sacred garments to Eleazar, publicly marking the succession of the priesthood.

Eleazar was Aaron’s third surviving son and served during Israel’s wilderness journey. His older brothers Nadab and Abihu died after offering unauthorized fire, leaving Eleazar and Ithamar responsible for priestly duties. Eleazar helped oversee the sanctuary, its sacred objects, and important rituals, including the handling of the bronze censers connected with Korah’s rebellion.

As high priest, Eleazar assisted Moses in numbering the Israelites and later helped Joshua distribute the land of Canaan. His son Phinehas eventually succeeded him, so the priesthood continued through Aaron’s family. The names in this question are easy to confuse: Nadab and Ithamar were Eleazar’s brothers, while Phinehas was his son. Eleazar therefore occupies the succession immediately after Aaron, not after one of his brothers.