I think it would be quite hard – having to keep praising “The Lord” and all of that stuff. However, I would undertake to try and make my flock think a bit more about the roots of the religion and not just regurgitate passages from the holy texts. Obviously in my role I could not say I did not believe in God but I would encourage people to question why they do so and what they get from it.
I would also present all the counter-arguments pretending to play “Devil’s Advocate”. So I would say things like (in the example of Christianity).. “Some people don’t believe the resurrection actually took place. How can we best answer this and what reasons do we have to believe it? Understanding these reasons will strengthen our faith.” By phrasing it this way I am encouraging people to think, but still within the world-view of the religion.