The word for today is…
hierophant (noun) – 1. An ancient Greek priest who interpreted sacred mysteries, especially the priest of the Eleusinian mysteries.
2. An interpreter of sacred mysteries or arcane knowledge.
3. One who explains or makes a commentary.
Source : The Free Dictionary
Etymology : Hierophant, hieroglyphics, and hierarch have a common root: hieros, a Greek word meaning “sacred.” Hieroglyphics joins hieros with a derivative of glyphein, the Greek verb for “to carve.” Hierarch, a word that can refer to a religious leader in a position of authority, joins hieros with a derivative of archein, meaning “to rule.” Hierophant itself joins the root with a derivative of phainein, which means “to show.” The original hierophants were priests of the ancient Greek city of Eleusis who performed sacred rites. In the 17th century, when the word was first documented in English, it referred to these priests. By the 19th century, English speakers were using the term in a broader sense. A hierophant can now be a spokesperson, a commentator, an interpreter, or a leading advocate.
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