We are sinners of our own account that is clear throughout the bible and not just one book
from where the not universal doctrine of original sin comes.
Quite apart from the utter absurdity of any kind of free will from the point of view of an omnipotent and omniscient creator (the determinism/random argument that has taken up a good part of this thread recently), if we are
all sinners by our own account - then the test is obviously inappropriate to our human nature (and your god is supposedly responsible for both). If there was any genuine choice involved, then at least some people would not be sinners.
Absolute morality is edenic namely walking with God in an environment where everything is in accordance with God. The world is not like that and that has a history. That is reflected in doctrinal formulations such as original sin, imputed sin etc.
Firstly, so despite all your talk of absolute morality, you don't actually think it's possible outside of paradise - fat lot of use it is, then.
Secondly, even if it isn't attainable, why isn't it actually outlined in the bible - why the
instructions in the OT to commit morally repugnant acts (taking slaves, committing genocide, and so on)?
Your version leaves people completely innocent. That might be your belief but it is not the biblical belief.
For the reasons stated, an omnipotent, omniscient creator would also be omni-responsible.
I don't know what you think is my version, I don't actually believe there is such a being, I'm just commenting on the Christian superstitions (many, varied, and contradictory as they are).