“Whether the Earth was created in 7 days, or 7 actual eras, Im not sure well ever be able to answer that. Its one of the great mysteries.”
There’s no mystery, Genesis speaks of the Earth being replenished. Prior, there was the fall of Lucifer and the destruction that followed. If God says it took 7 days to make things right again then so be it. How old the Earth was prior to the destruction only God knows for sure, nevertheless there have been many scientific estimates.
the Hebrew word translated “replenish” means “to-fill”
I believe for God, he only needs 6 days, he stopped on the 7th day