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.
If you've ever lived in Chicago, anyone who has, they know what a winter in Chicago is like. To be going through a tough time here in the winter would be just be all the more worse.