From the back cover:
Written in the Stars...
The mortal races of Krynn can see the presence of the gods by simply turning their gaze to the night sky. There the constellations of the gods of good, evil, and balance wheel about in silent struggle to influence their children who live and die on the world below. The gods have blessed the world with miracles of healing and salvation, but so also have they inflicted war and terrible cataclysms.
Clerics, holy warriors, and people of strong belief serve the gods, working to bring about the aims and ends given to them through prayer and meditation. They wield the divine powers of true healing and magic, and most will live and die for their cause. Powerful champions wield holy artifacts, some created by the gods themselves.
Holy Orders of the Stars is a resource for games set in the world of DRAGONLANCE. Contained within these pages are resources for players, including information on the gods and the races of Krynn, new prestige classes, spells, and magical items. Detailed descriptions of the churches of all of Krynn's gods are present, including the "lost" gods, Paladine and Takhisis. Dungeon Masters will discover resources on the gods and their aims, including their various aspects -- ideal for incorporating divine forces into an ongoing campaign. All information within this volume is full compatible with the revised edition of the d20 System game.