If you are referring to the most outer entity of all, ("God") I can only explain it as this:

EVERYTHING you know and everything you dont know, all that is, exists WITHIN the Mind of the Ultimate Source - that often called God. This is the Source of All and nothing can ever exist outside it, externally to it, since that would make something greater than what it is which is impossible. It is the first, the one that has always been and always will be. It is a conscious energy form, without any form, since there can be no external parts to give such forms since that would mean there would be outside space of other matter beyond it, which can not be since it itself is all and everything. We can never truly know it in its full, since only it itself can, from its own unique perspective and point of being.