Good questioning. I think it points to a fall before the fall of Adam. From that fall the earth became void . And without form. The word void should be considered as a cancelled check. Then God created Adam and put him in the garden with the tree of knowledge of good and evil. The tree is like a family tree. The fallen were here already and Adam and eve were forbidden to race mix, or eat from that fallen tree. But Satan be filed them. The story of Adam and his offspring begin here. The story of how God would save him and his offspring is the entirety of the bible. "You are the only family in earth I have known Amos 3:2