In other words, something or someone had to exist forever. As far as the notion that the universe came from nothing, that it created itself, I find this notion impossible. Nothing can come from nothing.
Forever is a term to describe a length of time.
But maybe there is another whole type of existance that doesn't include time. How can we understand that?
It's like before they knew the earth was round.
The Big Bang theory does not say to me if there is a creator or not. At one time though, I thought, wow big bang/Genesis what a coinsidence. But if our universe is a reciprocating one, one where it will stop expanding and then do it all over again, then it goes against the idea of a creator all of a sudden bringing the universe into existance.
But if our universe is one that constantly will expand "forever" then I would tend to think it was a creator that made it.
Either way there is no absolute, or an absolute answer, and I don't think that science has shown that there is a creator or not, again.
What came first, the chicken or the egg?