Where do I come from? What am I going to do? Where am I going?
The three ultimate questions of life.
As long as there's the unknown, there will be fear; as long as there's fear, there will naturally be a search for spiritual support. At this time, a voice emerges—
You come from the embrace of God, striving to live positively (create myths in the dungeon), and those who live earnestly will return to the embrace of God after death, enjoying the eternal paradise. Those who are lazy will descend to Hell after death.
The core idea is, diligently excavating relics will grant eternal peace even if you die, but if you spend your time being cunning and lazy, you'll suffer even after death.
This isn't an original idea from Lynch. In this world, human society already has all sorts of strange religions. After all, a civilized society like Earth's needs spiritual support, let alone an era of ignorance like this.