Can something come from nothing

[Edwardo Piet]

And the definition of universe is all that there is. Ergo there can be nothing outside of it since how can there be something outside of all that there is? So if the entity known as God does actually exist he has to do so within the universe not without it.

As soon as anything exists, you have a universe. If God is real, and at one point nothing else but God existed, then God was the entirety of the universe then. Or quantum foam. Or branes. Or whatever turns out to be the actual case, if we're ever able to find out with some degree of certainty beyond 'the math works and it doesn't violate any evidence or laws of physics that we know of'.

This is fantastically correct. I always think this too.