Humans faults and evolutionary biology

I can't promise I can help make theistic evolution rational, but I can help you develop a self-satisfying answer that helps you continue to believe:Adam and Eve are allegorical accounts of the human soul. The human souls were given a choice: Have a body with sinful desires along with the soul that has pure godly desires - and gain the capacity to freely choose between them as you will OR stay in pure soul mode. By 'eating of the fruit' the souls chose having sin-craving bodies. Jesus - realizing the souls have 'shot themselves in the foot', lives a life free from sin and tries to tell us how we can at least try and do likewise. This act of faith allows God to essentially redeem any soul that so much as tries to follow in Jesus' footpath (I am the way) and allow us to live eternally as souls rather than dying permanently as bodies (the price for having a body is that it dies).Personally, I think a more rational explanation is that the Christian concept of 'sin' is a flawed attempt to explain troubling things about people made in a time when they needed an explanation but had no tools other than evidence-free reasoning to do so. This was a post Socrates Hellenised world - where Socrates had already proven that a) souls exist and b) they were immortal. So the Greeks that wrote the books of the NT needed to take those 'facts' into account when they updated Judaism.Which would push you back to deism, next stop pantheism, final destination: atheism. Enjoy your ride