[xzins]

I like to quote Job where God basically asks Job, “Where were you when I created the universe?” So I don’t want to be too dogmatic about it because... I wasn’t there.

Great comment, P-M.

[Clutch Martin]

The ancient Hebrew word for day is yom. Yom is also used for age, as in era, epoch etc...

The hebrew word “was” in gen 1:2 can also translate to “became” which explains geologic and environmental (etcetera) happenings such as fossils, mountain ranges. Tectonic movement, erosion, ice ages and all that other empirical evidence that we (the humankind) have deduced, uncovered, postulated, thought about and discussed throughout millennia.

And that’s the simplest way that I can put it.