(Story)
The truth has been revealed, and you have been chosen to deliver it.
Prerequisites
Ability to cast divine spells, and you must either have received a vision from your god (or another appropriate supernatural entity) or have the Marked by the Gods background.
Benefit
If you are nonevil and worship a nonevil deity, whenever you cast a beneficial spell on an ally you gain a +1
Sacred Bonus to AC for 1 round per spell level. If you are evil or worship an evil deity, whenever you cast a harmful spell on an enemy you gain a +1
Profane Bonus to AC for 1 round per spell level. Casting a spell on yourself does not count unless it also affects an ally.
Goal
Convert an appropriate number of creatures to the worship of your deity.
Completion Benefit
Your bonus to AC for casting beneficial or harmful spells on allies increases to +2, and the bonus also applies on saving throws for the same duration.