Oh, this is the part where I give a badass boast? You see, people love these. It's cool as all hell, it's moralizing to you and demoralizing to your enemy. Probably because they're so awe-inspiring and believing in them drives you to make it happen, or makes it happen by itself, throwing away other precious consideration in the process, sometimes even logic.
You can also call that fanaticism. It does grant you bigger bonus for a reason, but it could also make you self-righteous and zealous. If they have a different idea than you and they think they're right, they're going to resist your attempts to convince them otherwise and you're both gonna get frustrated. What do you do now, tell them over and over again until they believe? It’s the least forceful way, but they could realize you’re repeating your argument ad nauseam and reject it. What now, beat some sense into them? They'll just call you a devil and reaffirm your 'evil' intentions. Now it’s even harder to get them to listen, especially after all the ‘wrongs’ you’ve done to them.
And no, get off my speech with your notion that moral correctness and power are correlated. They're simply not; ask your local moral philosophers at your own peril. If I beat you handily, that's because I'm better at fighting you than you do me and nothing else. Please do not think otherwise even if I disapprove of your actions. Ideas transcend mortality. We don't need another bland, unilateral society.
I remember one cool women said "if you life it, I can kill it, even if god it is", murmurs deliberately paraphrased to rhyme, and she can back that up quite well. But why god? It's not like there's anything notable for them to favorably compare to. They rarely have feats and the ones they do are really vague, and everything else are character statements. Who would deploy troops with like, 1 atk because the flavor text said that they can incinerate enemies into nothingness and consign a billion souls to oblivion?
Moreover they're either petty enough to interfere with human affairs or ignorant enough not to... wait that was a terrible double stan... no, goalpost moving. I retract that statement. But the point still stands, just not on the same god. But it gets worse: most of them are vengeful or jealous enough to to not stand for the take that and try to get you back for it. You might even get IRL people hot on your trails for it! So blasphemous boasts are bottom line not worth it even if you can back it up.
You also will inevitably have to choose between your creed and doing what’s right. And if you choose the creed, you will have to deal with preventing yourself from becoming a knight templar. Choose wisely. I’d rather not screw my mind with all this.