Romans 9:8

8Thatτοῦτ’isἔστιν,notοὐtheτὰchildrenτέκναof theτῆςfleshσαρκὸςthese [are]ταῦταchildrenτέκνατοῦof Godθεοῦ,butἀλλὰtheτὰchildrenτέκναof theτῆςpromiseἐπαγγελίαςare regardedλογίζεταιasεἰςoffspringσπέρμα·

That is, the children of the flesh, these [are] not children of God; but the children of the promise are reckoned for seed.