God created (worked) for 6 days, and took the 7th off. Later, His instructions were to honor the Sabbath, as He had rested on the 7th, Himself.
The creation (work) was performed as an example for how we should conduct our lives--work for 6, rest on the seventh.
A time-bound creation implies the creator was time-bound as well. What’s the need for a god-entity to rest, if not for it being time-bound?