'Priest's' in the Bible

These are the names of the sons of Aaron, the priests who were anointed, whom Aaron consecrated and ordained to minister in the priest’s office.

But Nadab and Abihu died in the presence of the Lord when they offered strange (unholy, unacceptable, inappropriate) fire before the Lord in the Wilderness of Sinai; and they had no sons. So Eleazar and Ithamar served as priests in the presence and under the supervision of Aaron their father.

So you shall appoint Aaron and his sons, and they shall observe and attend to their priesthood; but the layman (non-Levite) who approaches [the holy things] shall be put to death.”

And every man’s holy gifts shall be the priest’s; whatever any man gives the priest, it becomes his.’”

He shall stand before Eleazar the priest, who shall inquire before the Lord for him by the judgment (decision) of the Urim. At Joshua’s command the people shall go out and at his command they shall come in, he and all the congregation of Israel with him.”

because the offender should have remained in his city of refuge until the death of the high priest. But after the high priest’s death the offender shall return to the land of his possession.