The Saint

From publisher blurb:

While Clerics use the power of the gods to their own ends, the Saint is the keeper of the will of her deity, always furthering the beliefs and decrees handed down directly from on high. She preaches the gospel of her church and tries (tactfully) to convince those around her to accept the light (or darkness) of her patron deity. As she grows in strength and favor with her patron deity, the Saint unlocks truly divine powers, culminating in her ascension as a literal herald of her deity.