Biblical key doctrines have their roots in Genesis 1-11. This is why these chapters should be defended by Christians---not undermined or ignored by them.
Therefore the LORD God sent him forth from the garden of Eden,
Genesis 3:23
Was God JOKING when He expelled our first parents for disobedience from the garden? If not - what makes those of the cheap grace mentality think God won't expel from entrance to heaven (and access to the tree of life there) those for disobedience in the here & now? I mean, think about it... why does He want repentance from us?