The multiverse is made up of different realms, each with their own human population. These realms are planet sized, and have their own cultures and traditions. Realm gates exist in each of those realms and connect them to each other. The church of an organized religion control these gates and are the glue that bind these populations together.

Members of this clergy are the only ones who can use these realm gates to traverse the realms. Each realm worships the same deity, but have different perspectives regarding his nature, with some being polytheistic, monotheistic, or others. In realm A, there are multiple gods with the main god at the top ruling over them. In realm B, those multiple deities are simply smaller aspects of the same god. In realm C, god is a single monotheistic deity. And so on. Regardless of how it is represented, this god exists in some form across this multiverse with this church as administers of the faith. This God is unable to interact directly with these realms after creating them due to reasons, and is unable to communicate with these world's directly. Therefore, this organization is responsible for watching over the realm and protecting it from external threats.

How can a church exist across the multiverse with different perspectives on its god without causing a schism? What's the best way for it to maintain control?