The Eternal Night

In the lore of the Common Faith of Terrafirma, the Eternal Night is the nothingness where souls go to after death. It's made out of Void and it's protected from the Waking World, which is made of matter, by the Shade, an interdimensional place made of Vibration, which is the manifestation of the souls that haven't passed on to the Eternal Night.

Whereas some faithful believe that there is no escape from the Eternal Night (therefore it being eternal), Carteretian and Denvornian funeral rites equip the dead with lanterns and candles to aid them to safely cross the Eternal Night and be reborn into the Waking World.

The Erenfordian Common Faith doesn't believe that all souls pass through the Shade on their way to the Eternal Night, but rather that the Eternal Night is "paradise", the ultimate destination of souls, whereas the Shade is a land of demons.