I am convinced that Biblical cosmology is certainly that of a flat earth in a three tiered universe. However with the advent of Christianity the Greek influence rapidly displaced the Jewish influence. By the middle of the second century the Ptolemaic cosmology of a spherical earth at the center of the universe prevailed in Christian thought.
That is a common meme spread by atheists for the purpose of mocking the bible we know, and I think a lot of people have bought the jump it uses: that if any group ever believed in that bizarre looking cosmology (i've even seen it drawn with literal pillars, lol!), then that somehow the viewpoint of some group once later in time is supposed to prove that's what the scripture definitely meant (!?). Which already suggests a blind literalism (reminds of the pharisees in a way actually).
To me, I rely instead on just full reading to better have a feel for the wording, to better understand, and then the intended meanings are a lot easier to get as meant. That is, to read full books without an agenda but only to really listen.
So, because of that full reading, one better can hear the intended messages of course, and therefore wouldn't be likely to get caught up in unrelated side projects like trying to claim an age for the Earth (which is just an ego side project, to try to assert such is in the Bible).
Because of listening, we could notice that Adam
wasn't subject to death (Gen 2:17 hadn't yet been activated) until after he ate from that certain 'tree' (the birth of consciousness, and of judgment), and that also of course we could notice with real listening there is
another amazing tree (or
more amazing by far really) -- the "Tree of Life" -- something that we learn is from the eternal (in Revelation): and it's there in that same Garden, implying....well, a timelessness to that place/time.
In other words, it was a place (if it was even a literal place) without time as we think of time. (it's unimportant whether it was a mere physical place (it was totally a deeply real place tho!) but my personal guess is it was an actual place, but that's neither here nor there, but to illustrate that every mind has opinions, mere viewpoints).
But the fact of no-time in the Garden is...even this is...almost trivial in a way to me (though it ends the young Earth theory in a heartbeat, already, if Gen 1:1-2 didn't already for someone)... because the real messages, the intended meaning, are deeper by far.
So, summary, we should all remember there are bigger game afoot!
Don't miss the forest for the trees.
That's what I'm saying really.