The genealogies of Genesis provide the framework around which the Book of Genesis is structured. Beginning with Adam, genealogical material in Genesis 4, 5, 10, 11, 22, 25, 29–30, 35–36, and 46 moves the narrative forward from the creation to the beginnings of the Israelites' existence as a people. Adam's lineage in Genesis contains two branches: Chapter 4 giving the descendants of for Cain, and Chapter 5 that for Seth that is then continued in later chapters. Chapter 10 gives the Generations of Noah (also called the Table of Nations) that records the populating of the Earth by Noah's descendants, and is not strictly a genealogy but an ethnography. Genesis 5 and Genesis 11 include the age at which each patriarch had the progeny named as well as the number of years he lived thereafter. Many of the ages given in the text are long, but could have been considered modest in comparison to the ages given in other works (for instance, the Sumerian King List). The ages include patterns surrounding the numbers five and seven, for instance the 365 year life of Enoch (the same as the number of full calendar days in a solar year) and the 777 year life of Lamech (repetitional emphasis of the number seven). Overall, the ages display clear mathematical patterns, leading some people to conclude that number symbolism was used to construct them. Nevertheless, since Genesis 5 and 11 provide the age of each patriarch at the birth of his named descendant, it also appears to present a gapless chronology from Adam to Abraham, even if the named descendant is not always a first-generation son. Versions Nearly all modern translations of Genesis are derived from the Masoretic Text, but there are also two other versions of Genesis: the Samaritan Pentateuch and the Septuagint (a Greek translation of a Hebrew text). Translations from the Masoretic Text are preferred by Western Christians, including Roman Catholics and Protestants and by followers of Orthodox Judaism, whereas the Greek version is preferred by Eastern Christians, including Eastern Orthodox, Coptic, Ethiopic, Jacobite and Armenian. The Samaritan Pentateuch is used mainly by the Samaritans. Cain and Seth Genesis names three children of Adam and Eve, Cain, Abel and Seth. A genealogy tracing the descendants of Cain is given in , while the line from Seth down to Noah appears in . Scholars have noted similarities between these descents: most of