Hierophants were priests of the ancient Greek city of Eleusis who performed sacred rites. Now a hierophant is an advocate or spokesperson.
Here are some instances of the word used in books:
“The Hierophant becomes a touchstone for many, either representing an artificial belief system (like religion or a work ethic) that we follow or through core beliefs we have created for ourselves.”
― Rob Parnell, The Writer & The Hero’s Journey
“The Hierophant. Special skills: warrior angel, commander and killer of demons. Alignment: Lawful Good…as long as by good you meant God.”
― Jenn Stark, Wilde Fire