You're forgetting the rest..

"the tree of life also in the midst of the garden, and the tree of knowledge of good and evil. ...."but of the tree of the knowledge of good and evil, though shalt not eat of it: of in that day that thou eatest thereof thou shalt surely die."

And the Lord God said, Behold, the man is become as one of us, to know good and evil: and now, lest he put forth his hand, and take also of the tree of life, and eat, and live for ever...."

hehehe...nothing's ever simple, is it?