⁶ Well then, has God failed to fulfill his promise to Israel? No, for not all who are born into the nation of Israel are truly members of God’s people! ⁷ Being descendants of Abraham doesn’t make them truly Abraham’s children. For the Scriptures say, “Isaac is the son through whom your descendants will be counted,”^[a] though Abraham had other children, too. ⁸ This means that Abraham’s physical descendants are not necessarily children of God. Only the children of the promise are considered to be Abraham’s children. ⁹ For God had promised, “I will return about this time next year, and Sarah will have a son.”^[b]

¹⁰ This son was our ancestor Isaac. When he married Rebekah, she gave birth to twins.^{[c] 11} But before they were born, before they had done anything good or bad, she received a message from God. (This message shows that God chooses people according to his own purposes; ¹² he calls people, but not according to their good or bad works.) She was told, “Your older son will serve your younger son.”^{[d] 13} In the words of the Scriptures, “I loved Jacob, but I rejected Esau.”^[e]