I'm not entirely sure what you mean by this, but Paul said....
Rom 11:13; But I am speaking to you who are Gentiles. Inasmuch then as I am an apostle of Gentiles, I magnify my ministry,
1Tim 2:7; For this I was appointed a preacher and an apostle (I am telling the truth, I am not lying) as a teacher of the Gentiles in faith and truth.
Gal 2:7; But on the contrary, seeing that I had been entrusted with the gospel to the uncircumcised, just as Peter had been to the circumcised
Gal 2:8; (for He who effectually worked for Peter in his apostleship to the circumcised effectually worked for me also to the Gentiles),
Gal 2:9; and recognizing the grace that had been given to me, James and Cephas and John, who were reputed to be pillars, gave to me and Barnabas the right hand of fellowship, so that we might go to the Gentiles and they to the circumcised.
All the books Paul wrote (with the possible exception of Hebrews, which no one knows for sure who wrote)
Romans, Corinthians, Thessalonians, Galatians, Colossians, Ephesians, Phillipians,... were they written to the Jews... or to Gentiles. Were these places in Israel, or in Gentile lands?
I think we need to be careful saying scripture is only for the Jews. I'm a Gentile, so I guess none of the Bible applies to me.
I've heard people say the teachings of Jesus were only for the Jews, but Jesus Himself said...
Matt 28:19; "Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit,
Matt 28:20; teaching them to observe all that I commanded you; and lo, I am with you always, even to the end of the age."