The theme of Genesis is creation, sin, and re-creation. God made the world very good, but first cursed it and destroyed it in the flood because of man's disobedience. The new world after the flood was also spoiled by human sin (chapter 11). God chose Abraham for a special purpose. Through his family, all nations would be blessed (chapter 12:1-3). God's purpose will eventually be fulfilled through Abraham's descendants (chapter 49).