Read this passage and open each verse for the full verse feed and commentary tools.
8That is, it is not the children of the flesh who are children of God, but the children of the promise are regarded as descendants. 9For this is the word of promise: “At this time I will come, and Sarah will have a son.” 10And not only that, but there was also Rebekah, when she had conceived twins by one man, our father Isaac;