Sawyer(i)
7 neither, because they are a posterity of Abraham, are they all children; but in Isaac shall your posterity be called;
8 that is, the children of the flesh are not the children of God, but the children of the promise are accounted the posterity.
9 For this was the word of promise; According to this time I will come, and Sarah shall have a son.
10 And not only this, but Rebecca also being with child by one, by our father Isaac—
11 for the children not yet being born, nor having done any thing good or evil, that the purpose of God according to election might continue, not of works but of him that calls,—
12 it was said to her that the older shall serve the younger;
13 as it is written; Jacob I loved, but Esau I hated.
14 (7:2) What shall we say then? Is there unrighteousness with God? By no means.
15 For he says to Moses, I will be merciful to him to whom I may be merciful, and I will compassionate him whom I may compassionate.
16 Therefore, it is not of him that wills nor of him that runs, but of God that exercises mercy.