The Planes of Pure Law

The Analects, concerned primarily with the philosophies and doctrines of the forces of called variously Law, Order, Persistence, or Certitude, are silent on emanation of the first Aeon--The Fall-- where a lesser infinity of the Godhead was broken in some sort of hypercosmic trauma. The first concept to differentiate or separate from formlessness was Order, and everything that was not was Chaos. Thus, the first Syzygy was born.

As Order was elaborated, mind was born. The Prime Mover sought to make the multiverse as precise and orderly as its thought process. It constructed more of itself, a vast planar machine, and called it Mechanus.  If the whole universe were a vast computational engine, it could model the Godhead with such fidelity that it would be the Godhead--or at least the Godhead to the maximum resolution of the fallen universe.

But Unity no longer existed. On the expanding boundaries of Mechanus, interaction with Chaos created doubt, and doubt led to schism. The Boundary Archons became convinced that intellect and logic alone could not describe the Godhead or form Unity. Nor could the necessary transcendence occur by coercion. These seven Archons created the Heavenly Mountain, and at its peak was Abolition of Self, which would transform the souls born of chaos into what the Archons in their certainty knew the cosmos needed.

Other Border Archons believed that the cosmos could only be changed by force. They even dared consider that the former oneness might never be restored--but perhaps a new unity could be constructed. Mechanus's measures were too passive. They had seen the worst of Chaos, and the equations of the Machine were not adequate to the task of subduing it. Chaos could only be expunged, and those too weak to resist it would need correction or destruction themselves. Only the strong would have a place in Unity. They burrowed into Chaos and fixed it with chains called Oppression and founded Hell.