In Genesis chapters 4-7, the narrative unfolds further post-Eden consequences. Chapter 4 introduces Cain and Abel, Adam and Eve's sons. Their offerings to God lead to jealousy, culminating in Cain's murder of Abel. God punishes Cain, marking him to prevent others from taking revenge, yet he becomes the progenitor of several generations. Meanwhile, Adam and Eve have another son, Seth, from whom Noah eventually descends. By Chapter 6, humanity's wickedness proliferates, prompting God to regret their creation. However, Noah finds favor in God's eyes. God reveals His plan to cleanse the Earth with a great flood, instructing Noah to build an ark to save his family and pairs of each animal species. Chapter 7 recounts the onset of the flood, with waters prevailing for forty days and nights, obliterating all terrestrial life, save for those aboard the ark.