IPA: /ˈmɪstəˌɡoʊɡ/
KK: /ˈmɪstəˌɡoʊg/
A person who teaches or spreads mystical beliefs and prepares others for initiation into a secret or spiritual group.
The mystagogue guided the new members through the ancient rituals of the cult.
Mystagogue → It is formed from "mystes" (meaning initiate) and "agōgos" (meaning leader or guide). The word refers to a leader or guide of initiates, particularly in religious or mystical contexts.
Think of someone who is a 'leader' ('agōgos') for those who are 'initiated' ('mystes') into secret knowledge or rituals.