"Lots of things say that," Sam scoffs, because that's always what Dad comes home saying. Big something-or-other, boasting about how it was there for the Crucifixion, there for the Tower of Babel, how it was old old old and they'd better not dare. And Dad always killed those things that boasted and scuttled and bragged. Dean keeps saying Dad's a hero.

He considers the offer. Some things you can't look at, he knows that, it's like staring into the sun. Then he nods. "You're gonna have to prove it then."