Religion in the Empire and the Wilderness
Within the Empire, there is a pantheon of gods. I am assuming it's ok to repost them here since Alex posted them on these boards already.
Ammonar: Ammonar, called the Lightbringer, the Lawgiver, and the Lord of the Dawn, is the god of light, law and creation. He is symbolized by the winged sun, and the eagle is his sacred animal.
Calefa: Calefa is the Lady of Fortune, goddess of wealth and protector of the dead. Her symbol is a 7-spoked wheel, while her sacred animal is the raven. The Sisters of Mourning are her priestesses; they manage funerals, oversee wills and estates, and offer prayers for the dead. A secretive Imperial guild of assassins also serves under her aegis, following ritual rules of engagement to punish lawbreakers who escape other sanction.
Istreus: Istreus is the Master of Secrets, god of knowledge, learning, and magic. His holy symbol is the crescent or the tower, while his sacred animal is the owl. The mages and scholars of the Tower of Knowledge pay him allegiance. His worship is conducted in secret, and only the initiated know the meaning of the mantra, “no sooner spoken than broken”.
Ianna: Ianna is the Lioness, goddess of love and war. Her symbol is an eight-pointed star and her sacred animal is the lion. She has two orders of priestesses, the Dancers of the Veil and the Dancers of the Blade. The veil-dancers serve as courtesans, temple dancers, and sacred prostitutes during the Feast of Fertility. The blade-dancers are highly desired as bodyguards by the nobility.
Mityara: Mityara is the Noble Lady, goddess of peace and civic duty. She is symbolized with either an ivory lady with her arm outstretched, or with an ivory torch. Her sacred animal is the dove. Her priestesses are known as the Keepers of the Hearth Fire; they maintain the sacred fires and pure waters of the city, oversee ceremonies such as marriage and childbirth, control censorship of the arts, and may pardon any criminal.
Naurivus: Naurivus is the Patron of Explorers, god of travel, water, and weather. His symbol is the galley, and his sacred animals are the dog, the horse, and the dolphin. He is also known as the Lord of Winds, and sailors praise and curse him. The Imperial Company of Explorers, whose men and women serve as scouts and navigators around the empire, hold him as their patron deity.
Turas: Turas is the Marshal of Justice, god of strength, justice, and nobility. His symbols are the hammer and the sword & scales, and his sacred animals are the bull and the dog.
In the East, there are lots of other people who are not Citizens (i.e. subjects of the Emperor). The East has been in the Empire, out of the Empire, colonized by the Empire, or some other variant of control for ages. As of today, it's been out of the Empire for a few centuries as the Emperor's focus was elsewhere. Thus, you have your usual assortment of refugees, malcontents, bandits, rebels, nomads, monks, witches, beastmen, and hermits occupying the East. Some worship the Empire's gods. Some worship evil gods. Some worship a different pantheon of ostensibly "Lawful" gods. Some worship the spirits or the elements or the Earth Mother. You name it.
Some of these folks in the East may end up being your allies or subjects. But if they worship "the Old Gods" and you come in with a Wonderworker and a Paladin of the "New Gods", there is potential for conflict. Religion is less important for some and more important for others. For example, they may be tolerant when you're a visitor but might get a little worked up if you build a castle two hexes over and start charging taxes.