That's a belief held by lots of religions, not just Christians and the Christians certainly weren't the first
Nothing allows for anything to come from nothing but the more we learn the more nothing seems to be easier to explain than some thing; even the notion that all there is has always been all there is.
What makes it all fit is to make the most confounded leap to suppose that time itself is but a construct and cannot be held constraining, even of itself.
Once time is removed from the equation force goes along with it and can't stand on a single leg.
With any luck it will all go back where it began.