http://en.wikipedia.org/wiki/Conceptual_blending this link may help you understand conceptual blending and its background

Gilles Fauconnier describe conceptual blending by using metaphors and many short stories. the two that i liked the most are a clippers ship that sail in in the 1800's and a catamaran ship that is sailing the same course as the clipper ship but in 1993 and it is a race between the past and present. the other is a ski instructor teaching a beginner how to ski and uses metaphors to help the student learn to ski.. the metaphors is being a waiter and having a tray of croissants in one hand and in the other a plate of champagne theses metaphors are to teach the student the correct balance and position of his arms.. Gilles is using metaphors to enhance our thought process and creative thinking which in turn gives us meaning to the way we think feel and the activities in our life.

while Gilles does not talked about religion in conceptual blending it can offer tie that link the two things together. for example in church the a priest reads a story from the bible and uses metaphors to relay the example to the congregation he does this because he probably know more and understands the bible and how to interpret better than the people in church but more so he uses metaphors to help the people understand the bible and what God is trying to teach us or how he wants use to live our lives. there are metaphors everywhere in the bible. for example Noah's arc might have not have happened exactly the way it is in the bible but a lesson for people to read and understand how god want use to act or guide line for how we should act the like in the baseball field example what is considered out of bounds