Romans 9:10–11:
Not only that, but Rebekah’s children had one and the same father, our father Isaac. Yet, before the twins were born or had done anything good or bad—in order that God’s purpose in election might stand: (NIV)
And not only this, but there was Rebekah also, when she had conceived twins by one man, our [...]

Romans 9:9:
For this was how the promise was stated: “At the appointed time I will return, and Sarah will have a son.” (NIV)
For this is the word of promise: “AT THIS TIME I WILL COME, AND SARAH SHALL HAVE A SON.” (NASB)
For this is the word of promise, At this time will I come, and [...]

Romans 9:7–8:
Nor because they are his descendants are they all Abraham’s children. On the contrary, “It is through Isaac that your offspring will be reckoned.” In other words, it is not the natural children who are God’s children, but it is the children of the promise who are regarded as Abraham’s offspring.(NIV)
nor are they all [...]