Some approaches major on fitting the text with scientific approaches, others lean more to a literary approach to the text with less concern for fit with science. There are choices to make. Sometimes not much is at stake... sometimes a lot is at stake.
What follows is an argument I heard from a theology student last week, from the more literary approach to the text, approaching the question of when the fall of man happened.
The events of Genesis 2 occur in "the day" that the LORD God made the earth and the heavens (Gen 2:4). You could say thats some period of time, but what if a day is just a day. And if finished means completed then we can speak of what is finsihed on that day, 2v1.
When was this? Genesis 1 says the work of creation was completed on Day 6. There is evening and there is morning, man is created. Animals are named. Woman is created. As that day comes to its close, The Word of the LORD prepares to come and walk in the garden, in the cool of the day (Genesis 3:8) before the beginning of the seventh day. But when he comes, man is hiding in shame... the fall has happened...Its good to have been able to wrestle with the text a little further. It's a challenge to interpret a text well but far from impossible - and its useful to remember what's at stake in an interpretation. The same student also put forward something like this argument that Melchizedek is Shem. and several other tasty morsels from the Pentateuch... thoughts to ponder, what do you think?
Why? Could it be that the serpent turns from God and strikes at humanity out of jealousy that man, God's image bearer, is receiving the love of God and ruling over the world.
And so it still remains for man to enter into God's seventh day, through Christ. And so to walk with God.