Romans 9:8 DBY

⁶  Not however as though the word of God had failed; for not all [are] Israel which [are] of Israel;

⁷  nor because they are seed of Abraham [are] all children: but, In Isaac shall a seed be called to thee.

⁸  That is, [they that are] the children of the flesh, these [are] not the children of God; but the children of the promise are reckoned as seed.

⁹  For this word [is] of promise, According to this time I will come, and there shall be a son to Sarah.

¹⁰  And not only [that], but Rebecca having conceived by one, Isaac our father,