Here is something to think about concerning the seeming paradox of the Big Bang, and it coming into being when Time did not yet exist:
In the Gospel of Thomas Jesus said, "Blessed is he who came into being before he came into being."
There was always spirit, even in the void, and the spirit substance became what we see today. Like the paradox in John, everything came to be through spirit yet spirit became flesh. So that what was with god and was god became creation.