“….a combination of Gnostic Christianity, Buddhism, Zoroastrianism, and various other elements, with a basic doctrine of a conflict between light and dark…..”

And the Lord God said, “The man has now become like one of us, knowing good and evil”  Genesis 3:22

Light and Dark, Good and Evil… sets of two different things which exist by themselves but make no sense until somebody sees the difference between them.

A wall has two sides.
A room – four walls with a floor and a roof, determines an inside and an outside. Because the walls have two sides and because somebody built it.
A room is empty when nobody is inside it and ‘disappears’ when nobody remembers its existence. Even if its walls continue to stand …

Two points are distinct if there is some space between them.
Two points belong to the same line if the distance between them is full of other points.

Matter is discrete.
Even atoms, which have long been considered as impossible to be divided further, are constituted of smaller components. Electrons, protons, neutrons, … quarks… all the way ‘down’ to quanta …
All this discreteness is made possible by space.
Which simultaneously encompasses each of the discrete pieces of matter and separates them.

On the other hand, matter is discrete in yet another manner. In time.
Manny trees live longer than us and mountains last way longer than trees.
Yet nothing is forever. Nor have existed for always. Not our Sun nor even the small pieces which inhabit the subatomic world.
Each piece of everything comes into existence and decays into oblivion.
Each organism is born into this world and eventually dies – releasing its components for further use.
All this discrete becoming being made possible by time.
Which simultaneously encompasses and separates each event.

Similarly to the aforementioned room, neither matter, space or time makes any sense on its own. Not even together.
They might exist but they have no significance until noticed.

By us, by God…