 And then you come down and when you hear of Seth's birth, and Seth was now going to be a man who was born after Cain murdered his brother, and we don't know if there probably were other sons born in between and daughters, but Seth is specifically mentioned. Why him? Well, because again, he's moving you toward the fulfillment of that prophecy in Genesis 3 of a seed of the woman, a child that would be born eventually that would save mankind from Satan and from sin.