Parallel
Romans 9:7
Nestle 1904 Greek New Testament · Berean Standard Bible
οὐδ’ ὅτι εἰσὶν σπέρμα Ἀβραάμ πάντες τέκνα ἀλλ’ Ἐν Ἰσαὰκ κληθήσεταί σοι σπέρμα
Nor because they are Abraham’s descendants are they all his children. On the contrary, “Through Isaac your offspring will be reckoned (note: Genesis 21:12).”