Unless of course a PROTESTANT wants to argue that the Bible does not teach a Young Earth.
Well, the Bible, literally, teaches us that the world is only a few thousands of years old... which is clearly not accurate.
The period of the "7 days" is obviously symbolic of something... These simply can't be 24 hour days... These are more likely eons that are called days, if anything. Translation? Poor concepts of time at the original writing? Who knows... not me.
I don't necessarily believe the universe is 13.5 billion years, or whatever is claimed now by "scientists", meaning, those who worship the big bang theory exclusively. I don't bother trying to keep up, as the estimation has changed in my life time, and I am sure it will continue to change.
Back to the point, I don't believe that the OT in particular is meant to be so literal. I mean, if you look at it that way, when you had guys like Methusaleh living to be something like 900+ years, that means he would have been alive for quite a large percentage of history. If that were the case, why the heck didn't he write anything down? If you lived for 900+ years, imagine how you could recite history?!
Again, these numbers are not literal, quite obviously.
About the only scientific evidence for a young earth is that heavier metals such as gold are found near the surface, whereas if the planet cooled sooooo slowly, they would have sunk down to the magma core, no?
So, again, I think the concepts of time, words used to describe them, etc, probably experienced some serious changes.
When I think of the pre-Adam period, the first days... they are clearly not actual days, but symbolic.