The Dominions of man worship a pantheon of seven gods known as the Creed or the Seven. The people of Amar say prayers to each of the Seven for different things. Churches dedicated to individual gods of the pantheon generally don't exist, usually the churches and temples are dedicated to the Seven as a whole with shrines to each of the seven gods within. Forbidden evil gods do exist and if you think your character would worship one of them please speak to the DM first.