19 These are the descendants of Isaac, Abraham's son: Abraham was the father of Isaac, 20 and Isaac was forty years old when he took to wife Rebekah, the daughter of Bethu'el the Aramean of Paddan-aram, the sister of Laban the Aramean. 21 And Isaac prayed to the Lord for his wife, because she was barren; and the Lord granted his prayer, and Rebekah his wife conceived. 22 The children struggled together within her; and she said, "If it is thus, why do I live?" So she went to inquire of the Lord. 23 And the Lord said to her, "Two nations are in your womb, and two peoples, born of you, shall be divided; the one shall be stronger than the other, the elder shall serve the younger." 24 When her days to be delivered were fulfilled, behold, there were twins in her womb. 25 The first came forth red, all his body like a hairy mantle; so they called his name Esau. 26 Afterward his brother came forth, and his hand had taken hold of Esau's heel; so his name was called Jacob. Isaac was sixty years old when she bore them.
Matthew Henry's Commentary on Genesis 25:19-26
Commentary on Genesis 25:19-26
(Read Genesis 25:19-26)
Isaac seems not to have been much tried, but to have spent his days in quietness. Jacob and Esau were prayed for; their parents, after being long childless, obtained them by prayer. The fulfilment of God's promise is always sure, yet it is often slow. The faith of believers is tried, their patience exercised, and mercies long waited for are more welcome when they come. Isaac and Rebekah kept in view the promise of all nations being blessed in their posterity, therefore were not only desirous of children, but anxious concerning every thing which seemed to mark their future character. In all our doubts we should inquire of the Lord by prayer. In many of our conflicts with sin and temptation, we may adopt Rebekah's words, "If it be so, why am I thus?" If a child of God, why so careless or carnal? If not a child of God, why so afraid of, or so burdened with sin?