I am in the same boat, having given up my Congregation for a military unit at the end of E3 for political reasons (which turned out to be great because of the opportunity with the Grendel at E4).
It means I no longer attend National Assembly meetings, but I am still welcome at my Assembly meeting even as a non-voting priest. That’s just fine with me.
My previous character was a Pilgrim of Ambition (i.e. she had no priest skills and no congregation but was Dedicated to a virtue); she couldn’t vote on anything but was an active part of the Ambition assembly and had a lot of fun there.
It’s about game access, really.
Congregation grants you the ability to:
- vote on Empire Synod politics
- vote on National Assembly politics
- be given liao
Priest skills allow you to
- perform priestly ceremonies
Anyone can offer advice on the Virtues and call themselves a priest but they are likely to be taken more seriously if they have either a Congregation or have taken Dedicate as a skill.
Usually most Virtue Assemblies allow non-voting priests and people who are not priests to participate, although they may ask them to not participate in certain things (I wasn’t allowed to read a text once on the grounds I wasn’t a priest and hadn’t had the priestly training to handle the heresy within. It was good game.).
Go be the best Bishop you can. As a Leaguish priest of Ambition, have a reason for what you do and play it hard. You’ll be fine.