Genesis 25:18-28

18 Yishma'el's sons lived between Havilah and Shur, near Egypt as you go toward Ashur; he settled near all his kinsmen.
19 Here is the history of Yitz'chak, Avraham's son. Avraham fathered Yitz'chak.
20 Yitz'chak was forty years old when he took Rivkah, the daughter of B'tu'el the Arami from Paddan-Aram and sister of Lavan the Arami, to be his wife.
21 Yitz'chak prayed to ADONAI on behalf of his wife, because she was childless. ADONAI heeded his prayer, and Rivkah became pregnant.
22 The children fought with each other inside her so much that she said, "If it's going to be like this, why go on living?" So she went to inquire of ADONAI,
23 who answered her, "There are two nations in your womb. From birth they will be two rival peoples. One of these peoples will be stronger than the other, and the older will serve the younger."
24 When the time for her delivery came, there were twins in her womb.
25 The first to come out was reddish and covered all over with hair, like a coat; so they named him 'Esav [completely formed, that is, having hair already].
26 Then his brother emerged, with his hand holding 'Esav's heel, so he was called Ya'akov [he catches by the heel, he supplants]. Yitz'chak was sixty years old when she bore them.
27 The boys grew; and 'Esav became a skillful hunter, an outdoorsman; while Ya'akov was a quiet man who stayed in the tents.
28 Yitz'chak favored 'Esav, because he had a taste for game; Rivkah favored Ya'akov.