I can't really put it in one sentence because although on one hand Preacher is about faith and yes it is also about, I suppose, the search for God, the search for faith and the manipulation and the abuse committed by figures in whom I suppose people have faith.
“Nothing is so embarrassing as watching someone do something that you said couldn't be done.”
“I'm a wonderful disaster. So are you. We're all a mess. We're in this culture that says take this pill and you'll be happy, go on this diet and you'll be thinner, have your teeth whitened, people will love you more.”