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.
Freedom, morality, and the human dignity of the individual consists precisely in this; that he does good not because he is forced to do so, but because he freely conceives it, wants it, and loves it.

