The devil is the word evil with a d added, the lower reactive force that descends into the mind when the higher centers rise. Heaven is the upper brain and its clear states rejoicing, while earth is the ordinary mind and sea is the deepest reservoir of truth, and the descending force troubles both because the awakening person has begun to climb the spine toward the crown. Its wrath is great and its time short, since resistance always weakens as consciousness ascends.
What happens inside is the last thrashing of the low nature as the light gathers upward. The reactive self senses it is losing ground and lashes out, but its hour is already counted.
Heavens: the upper brain and its clear elevated states
Devil: the word evil with a d added, the lower reactive force
Earth: the ordinary mind and its habits
Sea: the deepest reservoir of truth within