Births of Jacob and Esau

Births of Jacob and Esau
The next important event chronicled in the book of Jasher is Isaac, the son of Abraham, taking a wife. "And Isaac took Rebecca and she became his wife, and he brought her into his tent. And Isaac was forty years old when he took Rebecca, the daughter of his uncle Bethuel, for a wife" (Jasher 24:44-45). Isaac married Rebecca, when he was forty years of age, so this would have been in the year 1916 B.C.
Rebecca bore no children for many years. But the book of Jasher records, "And in the fifty-ninth year of the life of Isaac the son of Abraham, Rebecca his wife was still barren in those days" (Jasher 26:1). Isaac's 59th year would have been 1897 B.C.
Rebecca asked her husband Isaac to pray for her to have children, even as Abraham had prayed for Sarah, who also had been barren. Isaac does so, and the Lord heard his earnest prayer, and Rebecca conceives (Jasher 26:2-8). She had twins -- Esau and Jacob -- who struggled for dominance even while in her womb. This would have been circa 1896 B.C., when God answered Isaac's prayer, and the prayers of Shem, Eber, and Abraham, and Esau and Jacob were born! Isaac was 60 years old when Jacob and Esau were born.
The book of Jasher goes on to tell us, "and the boys grew up to their fifteen year, and they came amongst the society of men. Esau was a designing and deceitful man, an excellent hunter in the field, and Jacob was a man perfect and wise, dwelling in tents, feeding flocks and learning the instructions of the Lord and the commandments of his father and mother" (Jasher 26:17).
The chronology of Jasher therefore informs us that Rebecca conceived when Isaac was 59, 19 years after she married Isaac. She delivered two children the following year. Therefore, Esau and Jacob were born in 1896 B.C. Fifteen years later, when they were strapping youths and Esau had become an excellent hunter, would have been the year 1881 B.C.