When someone says, "I've had an epiphany," it usually means that they've just caught on to something important that they've never understood or believed before. As in, "I just had an epiphany - I'm lovable just for being me, and not because of anything that I do."
Epiphany in the Church calendar is sort of the "Epiphany of all epiphanies" as it recognizes the almost unbelievable event of God becoming human in the form of a tiny, defenseless, homeless, poverty-stricken infant, born of parents who were scorned for getting pregnant before marriage. Not only is it implausible that God would choose to become human, but to reveal God's self in this specific little, odds-stacked-against-him wrinkly baby? Yeah, that's Epiphany.
This event is being held at St Paul's Episcopal Church. It's on Echoes' calendar because Charis has a small role in it, and because we really like ecumenical initiatives. The service itself will be liturgical (more so than anything at Echoes), and a really good way to mark the culmination of the Christmas season.