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Priests from WikiPedia:

A priest or priestess is a person having the authority or power to administer religious rites; in particular, rites of sacrifice to, and propitiation of, a deity or deities. Their office or position is the priesthood, a term which may also apply to such persons collectively.

Priests and priestesses have been known since the earliest of times and in the simplest societies. They exist in all or some branches of Judaism, Christianity, Shintoism, Hinduism, and many other religions, as well, and are generally regarded as having good contact with the deities of the religion to which they subscribe, often interpreting the meaning of events, performing the rituals of the religion, and to whom other believers often will turn for advice on spiritual matters.

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