Romans 9:7-9

21st Century King James Version

⁷ neither because they are the seed of Abraham are they all children; but, “In Isaac shall thy seed be called.”

⁸ That is, they who are the children of the flesh, these are not the children of God; rather, the children of the promise are counted as the seed.

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