Actually the creator God should be pushed back further than the big bang.
At least according to my understanding of Genesis; “In the beginning” means that; before that moment, there was nothing but the (creator / God / that which caused ) the space, mass and energy to come into existence.
According to the scriptures, there have been seven cycles of light and darkness. The first time there was total darkness throughout the universe but the rest of the time there have only been dimming and brightening of the visible universe.