Priesthood (noun)

1. The state or condition of being a priest.
2. A body of priests; the collective body of priests in a particular area or organization.
3. The office or rank of a priest.

Origin:

From middle english preesthud, from old english prēosthād, equivalent to priest +‎ -hood.

Examples:

1. He was ordained into the priesthood at a young age.
2. The priesthood of ancient Egypt was highly respected and powerful.
3. The priesthood of the Catholic Church is an all-male institution.
4. He was honored to be chosen as the leader of the priesthood.
5. The priesthood's role in the community was to provide spiritual guidance.