"It looks like the universe just behaves accordingly to natural laws, but it's really God - trust me"
Thus reads the punch line to a long-running joke that is belief in supernatural agents.
If there was an intelligent designer of the universe, an omniscient, omnipotent, omnipresent, eternal being responsible for the existence and configuration of the universe - it could have configured the universe any way it wanted.
The ground we stand on could be flat, and extend infinitely in all directions, or terminate 100 miles from where you were born.
...or... we could have a universe in which we are beings that require no ground to stand on.
...or... the universe could consist of pink cotton candy extending infinitely in all directions.
...or... the universe could consist of an infinite number of sharp pointy objects aimed sinisterly at your naughty bits.
...or... the universe could consist of nothing but ground - no sky.
I think you get the point.