Today we read John 3, the new birth chapter; you must be born again (literally: from above), the new birth is necessary to enter into the Kingdom of God; John 3:16 is the most quoted verse in all the Bible.
Genesis 4 tells of the results of original sin with the story of Cain and Abel and the beginning of animal sacrifice.
Genesis 5 gives the Genealogy from Adam to Noah.
The take home for today is there are two births, the physical birth and the spiritual birth (the birth from above), the first murder, the first man (Enoch) to be carried directly to God rather than die. (because ha walked with God).