Now we [all] know that everything the law says applies to those who are under [obligation to obey] that law, [Note: Here "the law" appears to refer to the Old Testament Scriptures generally, since Psalms and Isaiah are quoted. See verses 10-18]. This is so that the mouth of every objector may be stopped [i.e., from making excuses for his sin], and thereby bring the entire world under God's judgment [i.e., both Jews and Gentiles].

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.

And, as Isaiah had said in a previous passage [1:9], "If the Lord of the [heavenly] armies [i.e., Almighty God] had not left us some descendants [i.e., a small minority], we would have become like Sodom; He would have made us like Gomorrah [i.e., destroyed]."

But not everyone [of the Israelites] obeyed [that] good news. For Isaiah said [Isa. 53:1], "Lord, who has believed our message?"

Then Isaiah boldly said [Isa. 45:1], "I [i.e., God] was found by a people [i.e., the Gentiles] who were not looking for me. I became known to people who were not asking for me."

But Isaiah said about the Israelites [Isa. 40:2], "I reached out all day long to [help] people who disobeyed and spoke against [me]."

And again, Isaiah says [11:10], "A root [i.e., a descendant] from Jesse will appear [i.e., Christ], and He will rise up to rule over the nations, and the Gentiles will place their hope in Him."