In The Old Testament what three offices required anointing with oil?

In the Old Testament, the three offices that required anointing with oil were the priesthood, kingship, and prophethood. Priests were anointed to serve in the temple and perform sacrificial duties, kings were anointed to lead and govern the people, and prophets were consecrated to deliver God's messages. This practice symbolized divine selection and empowerment for their respective roles.