Whoever made that is not well educated in the views of atheism, and probably skipped all their science classes. It's theorized (by some) that this so called "nothing" is actualy something called dark matter, which passivly generates dark energy, which suspected of expanding the universe, and once the energy starts to diminish the univrese implodes on itself, causing a massive explosion to result from a compression of a universe of matter and energy being compressed to a freakishly small amount of space.
It's far-fetched, but at the very least it makes more sense than a single entity existing in a state of your said nothingness, accompanied only by darkness (both statements already making the nothingness a paradox), which he then uses to form matter in the span of a couple days, upon completing he decides to 'rest' despite being a fucking
god.
And conviniently a book detailing the exploits of this god winds up in the hand of man, despite
nobody existing at the time to document it. And he said so himself, after supposedly flooding the world, that he wouldn't interfere with the lives of man. Well either he's a pretty fucked up god suffering from ADHD, or it's a load of bull crammed into a couple thousand pages. And considering the worship of said god only started around the time of the Romans instead of from the beginning of time only further convinces me that it's the latter.