ουχ 3756 PRT-N οιον 3634 K-NSN δε 1161 CONJ οτι 3754 CONJ εκπεπτωκεν 1601 5758 V-RAI-3S ο 3588 T-NSM λογος 3056 N-NSM του 3588 T-GSM θεου 2316 N-GSM ου 3756 PRT-N γαρ 1063 CONJ παντες 3956 A-NPM οι 3588 T-NPM εξ 1537 PREP ισραηλ 2474 N-PRI ουτοι 3778 D-NPM ισραηλ 2474 N-PRI
Vincent's NT Word Studies
6. Not as though (ouc oion de oti). Rev., but it is not as though. The thought is abruptly introduced. I am not speaking of a matter of such a nature as that the doctrine of faith involves the failure of God's promises to Israel.Hath taken none effect (ekpeptwken). Lit., has fallen out. Rev., come to nought.
Robertson's NT Word Studies
9:6 {But it is not as though} (ouc hoion de hoti). Supply estin after ouc: "But it is not such as that," an old idiom, here alone in N.T. {Hath come to nought} (ekpept"ken). Perfect active indicative of ekpiptw, old verb, to fall out. {For they are not all Israel, which are of Israel} (ou gar pantes hoi ex Isral houtoi Isral). "For not all those out of Israel (the literal Jewish nation), these are Israel (the spiritual Israel)." this startling paradox is not a new idea with Paul. He had already shown (#Ga 3:7-9) that those of faith are the true sons of Abraham. He has amplified that idea also in #Ro 4. So he is not making a clever dodge here to escape a difficulty. He now shows how this was the original purpose of God to include only those who believed. {Seed of Abraham} (sperma Abraam). Physical descent here, but spiritual seed by promise in verse #8. He quotes #Ge 21:12f.