The Upper Hell: Dimension of Warriors.

The underlying nature of eternity and the substance of God the Father is Living Fire.
The Living Darkness is the method that eternity uses to close anomalies.
What you call "All that exists" is within a self-inflicted wound in the body of God the Father.
An anomally.
Eternity filled it with Living Darkness to purify and heal it.
God the Father sent his Living Fire energy into the wound, and 'personified' the Living Darkness..
In personification, the Living Darkness' came under the control of God.
God the Father then used Living Darkness Personifications to build 'Everything that exists.'
Living Darkness Personifications are the building blocks of your material dimension, of the higher dimensions above it, and of the lower dimensions below it.

The Upper Hell is the dimension of Warriors.
A Warrior may choose to descend to the lowest Hell and cast himself into the Lake of Fire.
The Lake of Fire is almost the same as Living Fire and is almost God himself.
The Lake of Fire transmutes through other dimensions to God.
Once in the Lake of Fire, the Warriors soul is divided into its various parts.
The Lake of Fire has a native population.
It may be that the Warrior joins that population.
Perhaps some may move on.