Equilibrium requires that the physical laws are obeyed at every instant. Regardless, the question is that how is a deity that acts over a time-frame (7 days), free from it? Not only that, why does such a timeless entity need to perform a time-based act? Namely, resting.
how is a deity that acts over a time-frame (7 days), free from it?
Are the laws of physics bound by reactions in time? Do they change when there is a chemical reaction in one part of space, none in another?
Do they rest after a reaction is complete?
God did not just create the world (in one instant), according to the Bible, but he did that over a 7-day period. If that is truly God's own testimony, then he himself does not say he is timeless.
That's why St. Augustine, faced with this dilemma, insisted God created omnia simul (everything at once), but insisted (to make sense of Genesis) that God repeated the same day six times because six is a "sacred number"!