Romans 9:27
And Isaiah declares about [the nation of] Israel [Isa. 10:22-23], "[Even] if the number of Israelites were [as many] as the grains of sand in the ocean, [still only] a small minority will be saved.
Romans 11:4-6
But how did God answer him? [I Kings 19:18 says], "I [i.e., God] have kept for myself seven thousand men who have not bowed their knee [in worship] to Baal [Note: "Baal" was a term used for one of the idols worshiped in Elijah's day by Canaanites and others in Palestine].
Romans 11:26
And so [i.e., in this way] all the Israelites will be saved. [Note: The "all" here is thought by many to refer to a large number of the physical Jews who will be saved, not necessarily to every single individual Jew]. Even as it is written [Isa. 59:20-21], "The Deliverer [i.e., Christ] will come from Zion [i.e., the city of Jerusalem, or from the nation of Israel]. He will take away the wickedness from Jacob [i.e., the Jews]."