Not by works, otherwise grace is no longer grace. Does Romans 11:6 refute Catholicism?

As I continue to address the top Protestant proof-texts for Justification By Faith Alone, I now come to the famous passage in Romans 11:6 where Paul says: "But if it is by grace, it is no longer on the basis of works; otherwise grace would no longer be grace." Protestants have traditionally pointed to this text as decisive proof that if our human efforts played any part of our salvation, it would nullify grace. That's a pretty serious charge, and it does seem to be what Paul is saying, so it's definitely worth looking into more. 

The first thing to keep in mind is that Catholicism teaches we are saved by Faith Alone, while it is Protestants who teach we are saved by Works Alone (apart from faith and grace). See HERE for one of many times I've addressed this. Given this, the goal of this analysis of Romans 11:6 is not to argue that works save us. Rather, the goal is to discern what Paul is actually trying to teach, so we can better appreciate his lessons. 

The second thing to keep in mind is that, from the many articles I've written on the subject of "works," it should be clear by now that it is referring to "works of the Mosaic Law," which separated the Israelite lineage from the pagan nations. (See HERE and HERE for recent articles.) God wanted the Israelite race to remain segregated from the Gentiles, so as to one day vindicate His promise that the Messiah would come from Abraham's biological lineage. The various commands from the Old Testament were meant to make Israel a "light to the nations" (Gentiles), which would be impossible if the Israelites were living just as pagan of lifestyles as the Gentiles. This fact means that "works" were never about "working your way into heaven," as has unfortunately become the common understanding from a surface-level understanding of Paul's writings. 

Given the above, we should expect the proper understanding of Romans 11:6 to be about God saving people apart from their ethnic lineage, namely saving a person regardless if they are biologically Jewish. But for apologetic's purposes, we obviously have to confront the popular Protestant reading, so that's what we'll do now. 

Not by works "so that no one may boast"? (Ephesians 2:8-9)

I talk a lot about Protestant proof texts, but by far the most popular is Ephesians 2:8-9. As readers know, I don't ever advocate running to James 2:24, but rather address Protestant proof texts head on. So in this post, we will look at how to use Ephesians 2:8-9 against the Protestant position, to not only disarm them of their precious few proof texts, but also prove the Catholic position.

Most Catholics will try to 'counter' a Protestant appeal to Ephesians 2:8-9 by pointing to 2:10, where Paul says God prepared us to do good works. They think that since Paul says "good works" in the next verse, that "good works" are part of being saved in verse 2:8. But I don't think this is a good argument to make, since we cannot have Paul contradicting himself by suggesting we are not saved by works but then we are. It's more reasonable to say Paul is putting these "good works" in a stage of your life that comes after being "saved". Rather, I think the true understanding of Eph 2:8-9 comes through understanding what Paul means by "so that no one may boast".