GODS Word states that eve was the mother of all living before adam and her were put out of the garden of eden,and before the birth of cain and abel.cain and abel were not the first children of adam and eve.when cain slew abel he had a mark put on him so that no one would touch him.he also married.the world was full of people that left the garden before sin.there is an undefined period of time after the original six days of creation and the original day of rest,and roughly 6000 years ago when adam ate from the tree of knowledge.the scientific age for the earth is basically correct.adam and eve had access to the tree of life and their flesh was eternal from eating from it.their children left the garden and their flesh died,but their souls went to paradise before sin.you can see their bodies in the fossil record older than 6000 years.when adam ate from the tree of knowledge all that were alive in and out of the garden,with the exception of those who repented,went to torments when their flesh died.eating from the tree of knowledge caused the eternal soul to die.death is decribed in the bible as death,hell,and the grave.