Romans 9
7 Ref Neither, because they are Abraham's seed, are they all children. But, "In Isaac will your seed be called."
8 Ref That is, it is not the children of the flesh who are children of God, but the children of the promise are counted as a seed.
9 Ref For this is a word of promise, "At the appointed time I will come, and Sarah will have a son."
10 Ref Not only so, but Rebecca also conceived by one, by our father Isaac.
11 Ref For being not yet born, neither having done anything good or bad, that the purpose of God according to election might stand, not of works, but of him who calls,
12 Ref it was said to her, "The elder will serve the younger."
13 Ref Even as it is written, "Jacob I loved, but Esau I hated."