Personally, I think knowing the difference between a racist and a saint is kind of important. But when Jesus again and again says things like the last shall be first, and the first shall be last, and the poor are blessed, and the rich are cursed, and that prostitutes make great dinner guests, it makes me wonder if our need for pure black-and-white categories is not true religion but maybe actually a sin. Knowing what category to place hemlock in might help us know whether it's safe to drink, but knowing what category to place ourselves and others in does not help us know God in the way that the church so often has tried to convince us it does.