"And... there's no way for you, or an angel, or- you can't just come here on your own, then? If the only way for these... worlds, I guess, to interact at all, is through these summoning circles, and anyone who knows how to make one has incentive to keep it secret..."

Dear god, that makes sense. That, all by itself, suffices to explain why such a major part of the universe could have been kept secret indefinitely. Max breathes.

"So... okay, back to- Hell, there's - not a bad deal? Is it- is it just called Hell, or is there- there's angels, what's... theologically...?"