The effects of leaving the Garden of Eden and the Tree of Life are continually revealed. The author also clearly includes later Jewish beliefs and cultic practices into the story, building upon Sabbath with sacrifice, barrenness, desert-wandering and now, sin. The story continues as God explains that sin is active, seeking to destroy humanity. There is still the question of authority, and who the characters will follow, either God or the serpent. The original man and woman, are barren, unable to have children, as Cain's descendants fill the earth with their murderous line. We are heading for a climax of evil, and left wondering where the line of Seth will fit into a world now full of evil.