Genesis 3: 23-24 (New English Bible)The lesson in these verses in the Book of Genesis is that death has come to us because of our human insistence that we should "know good and evil." My personal interpretation is that to "know good and evil" means that we claim the right to "know the difference," which translates, in the end, to a claim that we can "decide" the difference. As I get it, God felt this was a claim that humans should not have made, so humans were excluded from Eden, where the tree of life was an antidote to death.
Upon our expulsion from Paradise, we have found ourselves living, in fact, in a world we create ourselves, according to our own ideas of what is "good" and "evil." And God might say, "I hope you're happy, now."
In the human world, the rules (the laws) are not like the laws of Nature which are unchangeable and unchallengeable, and are called "laws" because they describe precisely what must, and will, happen. In our world, the "laws" are not like that; they tell us not what "must" happen, but what we think "should" happen.They are not "descriptions;" they are "prescriptions." Our role as creators in the human world is a role in which we exercise the right to determine not "ultimate" truth, but what we decide is "good" or not.
We might as well be "happy." We can't go back.