Completely irrelevant. Paul's other letters were to Gentiles. This letter was to Jews.
You ignored these questions...
- Do you deny that Peter's letters are written to Jews (Hebrews)?
- Do you deny that Peter said that Paul wrote to Jews (Hebrews)?
- Do you deny that Paul spoke in the synagogues to Jews (Hebrews)?
- Do you deny that there were Jews who believed Paul's gospel?
"Now it happened in Iconium that they went together to the synagogue of the Jews, and so spoke that a great multitude both of the Jews and of the Greeks believed." Acts 14:1
"Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where there was a synagogue of the Jews. Then Paul, as his custom was, went in to them, and for three Sabbaths reasoned with them from the Scriptures, explaining and demonstrating that the Christ had to suffer and rise again from the dead, and saying, “This Jesus whom I preach to you is the Christ.” And some of them were persuaded; and a great multitude of the devout Greeks, and not a few of the leading women, joined Paul and Silas." Acts17:1-4
"Then the brethren immediately sent Paul and Silas away by night to Berea. When they arrived, they went into the synagogue of the Jews. These were more fair-minded than those in Thessalonica, in that they received the word with all readiness, and searched the Scriptures daily to find out whether these things were so. Therefore many of them believed, and also not a few of the Greeks, prominent women as well as men." Acts 17:10-12
"And he (Paul) reasoned in the synagogue every Sabbath, and persuaded both Jews and Greeks." Acts 18:4
"Then Crispus, the ruler of the synagogue, believed on the Lord with all his household." Acts 18:8
Do you deny that the letter to the Hebrews claims that Jesus died for our sins, was buried, and rose from the dead?
Timothy was both a brother that was half Jew and a believer in Jesus. Philemon and Philippians were addressed from Paul and Timothy, while in prison. It's the same Timothy.
The author of Hebrews is preaching Jesus as the Christ for a "heavenly calling".
"Therefore, holy brethren, partakers of the heavenly calling, consider the Apostle and High Priest of our confession, Christ Jesus" Heb 3:1
Irrelevant. Paul is the apostle to the Gentiles, yet, as clearly proven to you, Paul reached out by letter to the Jews. And, this letter was most likely written by Luke, accompanied by Paul concerning who Jesus is and what He has done. Luke does not preface Acts, or his gospel, by mentioning his own name either.
My responses provide ample evidence, while yours are nothing more than stomping your feet in protest.