In Genesis 5 we are introduced to Noah, "a righteous man, who was perfect in his generation and well-pleasing to God," yet lived during a time of great wickedness. We look at whether the story of the flood is merely a fable, or instead the greatest disaster in human history. We tackle ways the early Church understood the mysterious "Nephilim," the offspring of "the Sons of God" and the daughters of men. We also examine the words "righteousness" and "grace," which first appear in Scripture in the story of Noah and have profound meaning in the New Testament.