The “Big Bang” is exceedingly in line with the Genesis description ~ so, which “god” is it who deviates?
"Big bang" is bad physics and bad theology rolled into a package.
Having all the mass of the universe collapsed to a point would be the mother of all black holes; nothing would ever "bang(TM)" its way out of that.
Likewise for a supposedly omniscient and omnipotent God to suddenly determine that it would be a cool thing to create a universe while the idea had never occurred to him previously in the infinite expanse of time backwards from that is basically idiotic, and whether that happened 17 billion years ago or 6000 years ago doesn't even matter. The overwhelming likelihood is that the universe at large, like God, is eternal, and that the creation stories we read in the Bible and other ancient literature refer to the creation of our own living world and local environment, and not to the creation of the entire universe.