Adam was NOT allowed to partake of
both trees at the same time(sinners eating from the tree of life was forbidden, because it puts them
back into the state of immortality)
Genesis 3:22-23 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: