In this and the two next verses he proves, that it was foretold of old, by Esaias the prophet, that God should pass by the greatest part of the Jews, and save only a remnant, or a few of them. Crieth; hereby is noted the prophet's zeal, or his openness and plainness. The testimony recorded, is found in Isaiah 10:22,23. As the sand of the sea; for number or multitude, for so the promise was to Abraham, Genesis 22:17, Genesis 32:12. Shall be saved: Isaiah saith, shall return; i.e. from the captivity, or from sin, as it is, Isaiah 10:21. This shows, none can be saved but they who return and repent.
Related Commentaries of Romans 9:27
Romans 9:27
27 Esaias also crieth concerning Israel, Though the number of the children of Israel be as the sand of the sea, a remnant shall be saved: