Shards in Belial: An Epic Fantasy Saga (The Sword of the Dragon origins) by Scott Appleton

The abbot seeking to protect an orphaned boy, the young woman thrust into the role of High Priestess, and the Swordmaster forced to watch his loved ones die. When the cockatrice appears, it may doom them all. Reverend Ashinah promised to take care of the orphaned Xavion, but events are beyond his control. Ooletta never wanted to become High Priestess, but she's stuck with the responsibility at the expense of her own dreams. Only Olympan the Swordmaster has a clear path, but it is a dangerous and bloody quest.