Wait wait wait. Am I misinterperting this? You seriously think there is no good thing in any of us? Yes, God is good, and he made good people. Even those that don't believe, or don't know to believe, have good in them. If you think there is no good thing in any of us, you live in a sad world. Yes, that good comes from God but it doesn't mean WE don't have it
you are misinterpreting the whole thing. the point is that if we have faith we can fight everything. there are good people but without God they do nothing. I hope this makes sense to you.