... they don't know they're dead!

At the threshold I saw more than a thousand angels fallen from Heaven. Angrily they shouted: 'Who is this, who is not dead, yet passes through the kingdom of the dead?' ... Then they reined in their great disdain enough to say: 'Let him be gone, who has so boldly made his way into this kingdom. Let him retrace his reckless path alone -- let him see if he can, for you shall stay, you who have led him through this gloomy realm.'