Oh, too late, I can't edit my error...
or is it off topic if I post this...
In the Bible's Book of Genesis, the Tree of Knowledge of Good and Evil was the tree in the middle of the Garden of Eden from which God forbade Adam and Eve to eat. The other tree in the middle of the garden was the Tree of Life. Nothing is said in Genesis about whether or not they were permitted to eat from the tree of life, but since the Bible says "Of every tree of the garden thou mayest freely eat: But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die.", we know they were allowed. When Adam and Eve ate the forbidden fruit from the tree, after being tempted by a serpent, they became knowledgeable of their sin, and were punished by God by being banished from the garden and forced to survive through agriculture "by the sweat of [their] brow". Being banished from Eden meant they would lose access to the tree of life and therefore were condemned to die. "The man has now become like one of us, knowing good and evil. He must not be allowed to reach out his hand and take also from the tree of life and eat, and live forever."
