alt Hacker NewsDo you honestly think you're raising a novel point and not just being trite? If so, try reading Luther's Concerning Christian Liberty, where he dispenses with this argument. Or if you want a short version of what he says, if you just claim to "believe in" God but that doesn't affect your behavior in any way, then you don't really believe.
I'm certain I could not raise a novel theological perspective on Chrstianity even if I devoted my entire life to it. But from what I can tell, killing is not a black stain that precludes you from salvation. God is good, and He is forgiving.