Who or what created the universe

[Ahriman]

Well something had to have always been, it seems.

If God is eternal, then unless He created time before space-time (?) then wouldn't the universe always have been eternally co-existant with Him, even though He would be the logical though not temporal cause?

Anyway, a god has more issues and complexities and arguments against than an eternal.universe.  And it wouldntmatter much regardless.

That's because the concept of God is more complex than the concept of an eternal universe.