Strictly speaking, you're right on all accounts.
We don't need a Priesthood to get by. Those who join choose to enter into the hierarchy of the Church.
We also don't have a community. Since you ask for a passage to read, how about High Priest Gilmore's Myth of the Satanic Community, found on the CoS homepage?
"The devil I'll bring you," answered Hagen. "I have enough to carry with my shield and breastplate; my helm is bright, the sword is in my hand, therefore I bring you naught."