jacob and esau are also of course biblical references:
Jacob and Esau's birth
Jacob and his twin brother, Esau, were born to Isaac and Rebecca after 20 years of marriage, when Isaac was 60 (Genesis 25:20, 25:26). There are two opinions in the Midrash as to how old Rebecca was at the time of her marriage and, consequently, at the twins' birth. According to the traditional counting cited by Rashi, Isaac was 37 years old at the time of the Binding of Isaac, and news of Rebecca's birth reached Abraham immediately after that event (see Rashi on Gen. 22:20). Isaac was 40 years old when he married Rebecca (Gen. 25:20), making Rebecca 3 years old at the time of her marriage. According to the second opinion, Isaac was 29 years old and Rebecca was 14 years old at the time of their marriage. Another view is that Rebecca was 10 years old at the time. In any case, 20 years elapsed before they had children. Throughout that time, both Isaac and Rebecca prayed fervently to God for offspring. God eventually answered Isaac's prayers and Rebecca conceived.
Rebecca was extremely uncomfortable during her double pregnancy and went to inquire of God why she was suffering so. The Midrash says that whenever she would pass a house of Torah study, Jacob would struggle to come out; whenever she would pass a house of idolatry, Esau would agitate to come out. She received the prophecy that twins were fighting in her womb and would continue to fight all their lives, and after they became two separate nations. The prophecy also said that the older would serve the younger; its statement "one people will be stronger than the other" has been taken to mean that the two nations would never gain power simultaneously: when one fell, the other would rise, and vice versa. Traditionally, Rebecca did not share the prophecy with her husband.
When the time came for Rebecca to give birth, the first to come out emerged red and hairy all over, with his heel grasped by the hand of the second to come out. Onlookers named the first ???, Esau (`Esav or `Esaw, meaning either "rough", "sensibly felt", "handled", from Hebrew: ????, `asah, "do" or "make"; or "completely developed", from Hebrew: ?????, `assui). The second is named ????, Jacob (Ya`aqob or Ya`aqov, meaning "heel-catcher", "supplanter", "leg-puller", "he who follows upon the heels of one", from Hebrew: ????, `aqab or `aqav, "seize by the heel", "circumvent", "restrain", a wordplay upon Hebrew: ?????, `iqqebah or `iqqbah, "heel").
The boys displayed very different natures as they matured. "Esau became a hunter, a man of the field, but Jacob was a simple man, a dweller in tents" (Genesis 25:27). Moreover, the attitudes of their parents toward them also differ: "Isaac loved Esau because game was in his mouth, but Rebecca loved Jacob" (ibid., 25:28).
 Sale of the birthright
According to the Talmud, immediately after Abraham died, Jacob prepared a lentil stew as a traditional mourner's meal for his father, Isaac. The Hebrew Bible states that Esau, returning famished from the fields, begged Jacob to give him some of the stew. (Esau referred to the dish as, "that red, red stuff", giving rise to his nickname, Hebrew: ????? (`Edom, meaning "Red").) Jacob offered to give Esau a bowl of stew in exchange for his birthright (the right to be recognized as firstborn), and Esau agrees; the Talmudic dating indicates both men were 15 at the time.
 Jacob's deception of Isaac
Isaac Blessing Jacob, by Govert Flinck, 1638 (Rijksmuseum Amsterdam).Much later, Isaac became blind in his old age and decided to bestow the blessing of the firstborn upon Esau. Uncertain of death, he sent Esau out to the fields to trap and cook a piece of savory game for him, so that he could eat it and bless Esau.
Rebecca overheard this conversation and realized prophetically that Isaac's blessings would go to Jacob, si