Who is Paul writing to in Romans 11?

Les explains that Paul always writes to the believer, and in the age of grace those believers are predominantly Gentiles, though there are certainly some Jewish believers as well. In Romans 11, Paul is making it plain by inspiration that God is not through with the nation of Israel. Israel has been set aside for the last 1900 and some years, without temple, priesthood, sacrifice, and without a homeland until our generation, but God is not through with His covenant people. The grafting process shows Israel was removed, her branches broken off, and the Gentiles were placed over the root of father Abraham. Gentiles have had the blessing of the gospel and the opportunity for salvation, but their day is fast coming to a close because they too have been walking it underfoot, and God's grace and patience will one day soon run out. Then He will go back and pick up where He left off with Israel. Paul writes to the brethren that they should not be ignorant, and ignorance is not a lack of brain cells or intelligence but a lack of having been taught something.