Yeah I kind of lean that way as well.. but the universe would still therefore be made of the substance of God if it was emanated out of God.. I see them as being simultaneously separate yet inseparable. At some primordial level God at its most basic essence probably occupies its own kind of space.. beyond anything we can conceive.

I like the thought you shared about the thought of doubt also containing God.. perhaps more useful distinctions to us are the comparison between divine and dark energy - as all things must contain God (or whatever you wish to call it.. singularity I also like).. not all things reflect the divine aspect of it though.

I feel particularly relevant here is the Gnostic poem 'Thunder, Perfect Mind'.. here are a few memorable verses

etc..