I'm an atheist, but I reference God/Jesus/etc almost constantly.
I don't think that religious words necessarily have to be linked to specific religious imagery/thoughts any more. It's hard to explain what I mean, but it's like... if I was religious, what feelings would those words, in that context, conjour up? Just because I'm not religious, in the context of a song or a book or a film - the words can conjour the same emotions, without religion actually coming into it.
For example, the Springsteen song My City of Ruins. Much of that has a lot of religion-based wording in it, the that wording is designed to be rousing and inspiring & whatever. Despite the fact that I have no feelings towards 'god', the use of the words in the context works because of the abstract concepts of hope and joy and redemption that the words have come to represent in our society, not because they relate to a specific, literal, actual "God".
...see what I mean? ......probably not.
I suppose I'm kind of agreeing with others who have said that religion is not the same as spirituality... although I would not consider myself spiritual either.
I think also that references to other people having belief can be powerful in itself. Just because I don't belive myself, the idea of having absolute faith and having that faith be rewarded is kind of a romantic & beautiful concept. I mean, just like a lot of other romantic & beautiful concepts, it's fictional, but that doesn't necessarily mean that it has no power or emotion attatched.
Ah, who knows?