There is both math and observation to support the big bang theory, but the impetus of creation relies on some ‘kickstart’ from The Creator. If I read your post correctly I think we are saying the same thing.
The science of God involves the “impossible laws” of physics and are luminal and even supraluminal,and transcendent over time, space, and matter, in scope. Christ has in himself all the radiance of the Father and his substence is pressed into the person of Christ(The thumprint of God pressed into our matter universe thru the body of Christ). The Bible says it was by Christ that all of creation was made.