Dear Shaker,
I suspect that this refers to the belief that God and creation are separable - indeed, according to the personalistic deity of bog-standard theism, God has always existed and has never not existed, but there was a time when there was no universe. On this view, you can in principle have a God without a creation - if the universe was to disappear (assuming for the moment that such talk even makes sense) there would still be God.
Post 27 to refresh your memory.
And from your OP.
8. Scientific pantheism does not believe that science will necessarily be able to explain everything in the universe. Above all, the fundamental mystery of the sheer existence of matter/energy is likely to remain impenetrable.
God has always existed, so has the Universe, the only reason we say the Universe had a beginning is because of scientific thinking, this is another flaw in science which we have all swallowed, it is the old question, how can something come from nothing, well it can't.
The Universe may have been entirely different from what we observe now but it was still there, the latest scientific thinking is two black holes colliding, colliding in what!
What this Pantheism says to me, science is limited in how it describes the Universe just like we are limited in how we describe God, a human flaw that we think we are intelligent enough to answer, what is God/Universe.
The Universe, Oxford English,
all existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
All, even the stuff it is supposedly expanding into, What we believe, our very limited knowledge.
To end, how can the Universe disappear, magic, woo, yes your right, it don't make sense
Gonnagle.