<Li> Lech - Lecha, on Genesis 12--17: Abraham, Sarah, Lot, covenant, Hagar and Ishmael, circumcision </Li> <Li> Vayeira, on Genesis 18--22: Abraham's visitors, Sodomites, Lot's visitors and flight, Hagar expelled, binding of Isaac </Li> <Li> Chayei Sarah, on Genesis 23--25: Sarah buried, Rebekah for Isaac </Li> <Li> Toledot, on Genesis 25--28: Esau and Jacob, Esau's birthright, Isaac's blessing </Li>

When was the bible book of genesis written