I love how social this ultimately is as presented, the quite effective page 1 in terms of appearing genuinely like a religious pamphlet and so setting a very strong vibe right away, and strong voice throughout. Less is more in terms of writing situations like these - preferring simple instructions that can easily balloon into huge scenes with the right group.
I think that a recognizable connection to Ancient Myth of a kind is enough, sometimes the implication being simply "ancient aliens" or "cults and religion" is serviceable shorthand. Here the function of a central myth itself is not necessarily as front and center as one might think but ultimately I don't think that detracts from the finished work.