18Ishmael’s descendants occupied the region from Havilah to Shur, which is east of Egypt in the direction of Asshur. There they lived in open hostility toward all their relatives. The Births of Esau and Jacob
21Isaac pleaded with the LORD on behalf of his wife, because she was unable to have children. The LORD answered Isaac’s prayer, and Rebekah became pregnant with twins.
23And the LORD told her, “The sons in your womb will become two nations. From the very beginning, the two nations will be rivals. One nation will be stronger than the other; and your older son will serve your younger son.”
26Then the other twin was born with his hand grasping Esau’s heel. So they named him Jacob. Isaac was sixty years old when the twins were born. Esau Sells His Birthright
33But Jacob said, “First you must swear that your birthright is mine.” So Esau swore an oath, thereby selling all his rights as the firstborn to his brother, Jacob.