(Here’s a riff on the Vancian wizard. The school of White Magic has a limited selection of spells; the priest class mitigates this restriction, but at the cost of spells per day.)
Priests (also known as healers) dedicate their lives to the Church of Law. Their focus is on spellcasting, ministry, and prayer. Most priests do not become adventurers, but some are sent forth from their temples into the world. Most of these priests fall prey to temptation or misfortune, but a few rise in power and broaden the reach and influence of their order.
Priests are a variant of the white wizard character class. Since they do not need to memorize their spells in advance, they have a broader range of powers – but are more limited in the number of spells cast per day.