The tradition to worship the female and the male aspect of god and nature, was build up in every culture. By still being a mystery and an unlimited source of mercy and secrets, these two aspects nourish and complete each other to an united divine energy.
As you might have noticed, in the most religions, specially the monotheistic ones, the female aspect, the female energy is not automatically associated with god. Mostly the female characters in the holy books are interpreted to be side actors and of minor importance.