prologos: My answer, has to to do with the concept of time as a 4st dimension. In our world, that did not always exist, we movethrough time, as well as in the three space dimensions. There was no such movement prior to our universe's beginning. The creator (not necessarily "god" as we think), did, or does not move through time .
This sounds like a good explanation but it falls apart when you consider the fact that this is just more wild speculation that is being used to cover another wild speculation.
We don't know what it's like outside of the Universe or what it was like before the big bang. So making the claim that "God/creator" exists outside of the Universe and isn't subject to the concept of time, is the exact same thing as saying that this creator exists in the first place.
It gets us nowhere.