Speaking of genealogy, in Genesis we find the lineage of Cain.  Next comes the genealogy of Adam through his third son Seth all the way to the three sons of Noah:  Shem, Ham, and Japheth.  This is an amazingly detailed history of all of the men born from Adam to Seth, to Noah.  The Jews have trusted in the Old Testament linage for their entire history.  Just like Kunta Kinte in 'Roots'.  Oral lineages were preserved for many years before men learned to write.  Oral history was important to people.

After that point, "...the sons of God saw the daughters of men that they were fair…and they bare children."   They deserted God.  And then they committed every imaginable evil.  Gen. 5:a, 4:b

And it 'repented' the Lord that he had made man on the earth, and it grieved him at his heart.  And the Lord said, I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing and the fowls of the air; for it repenteth me that I have made them."  Gen. 5: 6-7.

I've given you a little background in order to tell you the verse I love:  Gen. 5: 8 "But Noah found grace in the eyes of the Lord."  In the midst of universal evil, Noah clung to the precepts of God and found grace.  When you become discouraged by the direction that the world is headed; when you feel all alone in your Christian walk; stay in there.  Grace is coming.  God's grace.  Amazing grace.

One other thought.  God was going to destroy men, beasts, creeping things and fowls.  I guess he was leaving the fish?  I wonder if this had happened before?  Maybe between Gen. 1:1 and Gen. 1:2?  Just thinking out loud.