The meaning of life is hidden in the ether, such that every breath we take enlivens us. If you were to stop taking breaths, you would feel the life force in you begin to dissipate. Furthermore, you would soon begin to feel weakened. If you were to take one deep breath, and hold it for a length of time, you also would feel the life force in you begin to dissipate.
Oxygen is one of the building blocks of life. Without it, life would cease to be. Without it, every machine would cease to function, because even machines need oxygen, whether they use fuel, batteries, or some other source of power. The oxygen is in the fuel, and in the battery, and in the painstaking details of every machine, every instrument, and every ordered system. If you are thinking of starting a universe, oxygen is your first and most important ingredient, and the only ingredient that will guarantee your long term survival.
When the devil creates a demon, he takes the oxygen out of them by removing the spirit that is in them, and replacing it with a demonic spirit. It creates a vacumn that makes them eternally dependent on him. They no longer can think independently, because they no longer breathe oxygen. They no longer are alive to God. They merely exist in the ether, and eventually will disintegrate and cease to be.
The Lord God Almighty El Shaddai