True Believer

(Complete Divine, page 86, DnD 3.5)

[Divine]

Your deity rewards your unquestioning faith and dedication.

Prerequisite

Must choose a single deity to worship. Must be within one step of that god's alignment

Benefit

Once per day when you are about to make a saving throw you may declare that you are using this feat to gain a +2 insight bonus on that saving throw. This feat also allows you to use a relic (see relics, page 88) of the deity you worship.