Romans 9:9-13
9:9 For this is what the promise declared: “About a year from now I will return and Sarah will have a son.”
9:10 Not only that, but when Rebekah had conceived children by one man, our ancestor Isaac –
9:11 even before they were born or had done anything good or bad (so that God’s purpose in election would stand, not by works but by his calling) –
9:12 it was said to her, “The older will serve the younger,”
9:13 just as it is written: “Jacob I loved, but Esau I hated.”