Those whom worship the Ascended, whom are of stalwart enough servants and followers of their chosen diety, and pious enough in their beliefs, will oft be blessed to wield a small drop of their potential divine power in their name. These individuals, be they priest, templar or ranger, are always devout, and tied to the institution of their faith in some way beyond mere worship. They are directly tied to an Ordos of one sort or another, a member of clergy, a brother or sister of a Crusader Order, or one of the secretive Inquisitorial Witch-Hunter Ordos that each of the Ascended have. However they do share this unique ability. Those from the same church all can call upon the same holy favors, prayers, miracles and hymns, though depending on their task and their purpose, of course, each individual has their preferred bits of scripture committed to memory.
So for divine casters, their prayer (spell) lists do not change from 5e, however for roleplay purposes it is suggested that if you play a divine casting character, you acknowledge and work with your GM that you need to figure out justifcation as to why certain powers would be bestowed upon followers of certain gods. Things like Create Undead for example, would not be a thing that would occur, not a power any Ascended would grant their followers.