You misunderstand. The religion is adamantly proclaiming they are a “religion of peace” and the written and documented way of achieving that peace in their scripture is to convert everyone to their religion and kill anyone who refuses. It’s literally in the text.

Most religions are happy to simply say they’ll burn in hell or whatever, or that they’re damned, or at most say that you should try to save them through educating them about the “true” word of God according to their beliefs. This one literally says in black and white that if people refuse to accept their sky captain, then kill them… for peace.

As far as I’m aware, having it spelled out like that in their holy book, is rather unique. Other religions that I’ve learned about do not directly instruct their followers to kill someone simply for non-belief. Maybe ostracise or cast them out, but never outright murder because they believe differently. Not in the text. It may be implied. It may be encouraged… but it’s not just… said like that in black and white in their doctrine.