Have you even met religious people?! I’m not saying everyone is violent. But the core tenet of every religion I’m aware of is believing in it without meaningfully diverting from its core tenets. That’s pretty fundamental.
Otherwise, pretty much every religion says they aren’t a part of it anymore. Sometimes that has serious consequences for them. Several of the large religions have ‘you can’t leave’ clauses, either de facto or de jure.
And if the core tenets get ‘influenced’ to violence, then that is what also happens.
Religion is just a form of trained education, you see the same type of belief in people who were educated in schools. People who go through such targetted training are inherently going to believe that the training had some kind of purpose and made it unnecessary to reevaluate it every single time it's brought up. After all what's the point of training if you have to question it all day. This is why you see so many people in society fairly blindly parrotting "I believe in science!" and you think they mean: oh you believe in the scientific method, truth above all else, etc. But no, they mean that they were trained to believe in this particular thing that the tribe thinks is important and they kinda got the gist of it during training.
I can only speak for one religion it has authorities that are well studied and can be consulted. These authorities are only as influential as the congregation that supports them.
The story goes that the Egyptian hieroglyph for the Israelites is the translated to the land without a ruler. The idea was that they self organized around texts.