But nobody was required to “believe” this as a divine fact. The Trinity was a “mystery” not because it was an incomprehensible conundrum that had to be taken “on faith.” It was a musterion because it was an “initiation” that inducted Christians into a wholly different way of thinking about the divine. Basil always distinguished between the kerygma of the Church (its public message) and its dogma, the inner meaning of the kerygma, which could be grasped only after long immersion in liturgical prayer.
