Religion in Eberron
In many Dungeons & Dragons settings, deities are beings that player characters can interact with directly. There is no question whether the gods exist; if you’re an experienced planar traveler, you can drop by Asgard and beat up Thor. Fundamentally, deities are just very powerful characters.
This is not the case in Eberron. While many of the deities are portrayed with anthropomorphic icons, they do not walk the mortal world or even the known planes. If they exist at all, deities inhabit a higher plane of existence — a realm that cannot be reached with planar travel. Some believe that the souls of heroes travel to this realm after passing through the darkness of Dolurrh; while this is a comforting belief, it has never been proven.
If the gods may not even exist, who do you commune with? Why do planar allies answer your call? Divine magic exists, and most believe that it is a gift from the gods. Something provides answers to commune, and a priest believes it to be his deity. A skeptic may counter that it is the collective unconscious or merely a powerful outsider. As for planar allies, reverence for the gods is not limited to mortals. Celestials and fiends also worship deities. An archon dedicated to Dol Arrah may never have seen the face of the goddess but it believes in her implicitly, and it will aid those mortals who fight in her name.
Ultimately, belief in a deity is a matter of faith. Each deity represents an ideal and espouses a certain code and approach to life. When you embrace the path of a god, you become part of a community in the mortal world. Perhaps, if you are deeply spiritual, you will gain the power to perform miracles of divine magic. This is what people expect of the gods of Eberron: they affect the world by guiding and empowering their followers, not by manifesting and taking direct action.
- Keith Baker “Religions in Eberron”