hierophant noun. 
['hʌɪrǝ(ʊ)fant] L17.[Late Latin hierophanta, -es from Greek hierophantēs, from hieros (see HIERO-) + phan- base of phainein reveal: see -ANT1.]1.  Antiquities. An official expounder of sacred mysteries or ceremonies, esp. in ancient Greece; an initiating or presiding priest. 
L17.2.  gen. An expounder of sacred mysteries; an interpreter of an esoteric principle. 
E19.■ M. Lowry What did..the hierophants of science know of the fearful potencies of..evil? ■   hiero'phantic adjective L18.  [TahlilGaran] English Dictionary ▲