We are into the seventh day by God's reckoning. If you wish to compare that to the doubling of the Universe 'bubble', since inflation the Universe has doubled how many times? ... Dr Schroeder says six, going on seven. How would the message 'your time of existence in this phase of My Universe will be equal to twelve rotations of the galactic cluster in which you galaxy and your star and your planet exist' have gone over with simple men of the Bible?
God speaks to us at the level we can comprehend, even though it may take a little stretching of our minds, it is always comprehensible by some reference frame, as it 'analogizes' a much more complex over-all reality.
Make it simpler: How many galaxies could Moses see?
And, (if you can answer that one) did his language/knowledge base even contain the concept of "galaxy"?