PC is player avatar and player should decide whether pc belive in something or not... because others belive i should is dumb argument... and i think that you are another person that want force another players to play way that you want...
Why would I want to force other players to play the way that I want? Of course I don't. If I did, I'd start with people who kill Alistair or hand Fenris over to slavers, not people who disagree with one line of dialogue. 
I don't appreciate you insulting me. I am trying to explain why it's not "forcing" your character to be as deeply religious as you think it is. I am not saying that you have to have a character who believes something. Especially because you DO have the option of expressing disbelief there. You just disagree with the way that you can express disbelief.
And yet it isn't god bless you only bless you (already they have other meanings) if you told god bless you it would have religious meaning without it doesn't only politeness . And no peoples who don't belive in god don't say may jesus guide you or may allah guide you.
Where else do you think the phrase "bless you" came from? 