Before the creation, there are two forces: bli gvul (infinite) and gvul (finite). The bli gvul dominates. And there is nothing. Only Hashem’s Light, with all different forms of creation dissolved in it, existing all at the same time, in potential.
Then Hashem gives the power of domination to the koach gvul. And creation happens.
Basically, it looks like this (in this scene Jack et al. are coming back from the Afterlife):