Adam and Eve fell, and then were expelled from access to the Tree of Life as a result of the fall.

The fall means that their entire nature was corrupted and they became dead in sin (Genesis 2:17, Eph 2:1). Even their minds and hearts (and all of Adam's heirs) became corrupted (Genesis 6:5, Jeremiah 17:9, Romans 3:10-18, Titus 1:15). Thus humanity was disabled and rendered rancid (Romans 7:18 and 8:7).

Thank God, He had already planned our redemption in Christ!

-Robin