Bindings of Faith

Bindings of Faith are cloth bracelets that gives bonuses to stamina, intellect, spirit and spell power. It is part of the Tier III priest set Vestments of Faith.

Source
Bindings of Faith is a quest reward from. The required quest item Desecrated Bindings drops off Anub'Rekhan, Grand Widow Faerlina and Gluth in Naxxramas.