Romans 9:7-9 ▼

7 Neither, because they are Abraham’s offspring, are they all children. But, “your offspring will be accounted as from Isaac.”

8 That is, it is not the children of the flesh who are children of God, but the children of the promise are counted as heirs.

9 For this is a word of promise: “At the appointed time I will come, and Sarah will have a son.”