Alas! Of what kind is that place of wailing and of gnashing of teeth...

'Alas! Of what kind is that place of wailing and of gnashing of teeth. . . at which even Satan shudders? O Woe! What kind of place is it, where the unsleeping worm dieth not? What dread misery to be sent into outer darkness? Of what kind of angels placed over these torments, who pitiless and frightful, punish by casting in there, while at the same time the reproach most grievously? 

Then shall those already in the midst of the torments cry out with pleading voices, and there will be no one to speak for them to the Lord, and they shall not be heard. Then they will learn that the things which happened to them in this life were as nothing; and those that here seemed sweet, were more bitter than gall and wormwood.'

St. Ephrem of Syria