Incomprehensible

There is little that we can learn about the spheres beyond the first one. 

After the rest and strengthening of the first unity sphere, the spirit passes into one of the duality and there conflict begins again on a higher plane. Those sides of his nature which have been dormant are now quickened into new life and the spirit struggles to manifest himself more perfectly in all ways where he has been deficient. Then, greatly strengthened and enlarged, he passes into the Sphere of Action. He then becomes the Creator rather than the creature; more resembling the Lord God, which the old Hebrews worshipped but without the blemishes and limitations they imputed to their ideal Creator.

The next conflict sphere is too remote for us to clearly comprehend. Then comes, finally, the Unity in Peace, the highest which we can even faintly imagine. Here we must leave the spirit, for, without some body, some manifested form, he is to us incomprehensible.