Romans 9:7-9

Complete Jewish Bible

⁷ indeed, not all the descendants are seed of Avraham;^[a] rather, “What is to be called your ‘seed’ will be in Yitz’chak.”^{[b] 8} In other words, it is not the physical children who are children of God, but the children the promise refers to who are considered seed. ⁹ For this is what the promise said: “At the time set, I will come; and Sarah will have a son.”^[c]