Could you please refrain from using epithets in reference to religious people? In my opinion, this is akin to using the f-word for gay people, b-word for women, etc.
It's nothing like using those words. Being gay or being a woman is something you are born with. Being a Christian is a decision you choose to make, it is not an innate quality. Calling someone a bible thumper is criticizing an irrational decision that person made.