Favours
Favours, in broad terms, is a promise of future assistance of the temples deity. It could take the form of a deity's intervention, such as an omen, a vision, or a minor miracle.
These can be used for rerolling death saving throws, adding guidance roll to a failed skill check, or getting to reroll to persuade a friendly NPC after failing.
A character can only have a maximum number of unused favours equal to 1+ the character's charisma or wisdom modifier.