A common misinterpretation of this verse is to apply it as a blanket condemnation of all Jewish people, fostering anti-Semitism, whereas Paul specifically refers to those particular unbelievers who rejected and opposed the Messiah, not the Jewish people as a whole, many of whom were fellow believers; another error is ignoring the context of Paul's Jewish heritage and his grief over his kinsmen's unbelief in Romans 9-11, or using it to justify ongoing ethnic hatred rather than recognizing it as a historical indictment of gospel resisters.
I Thessalonians 2:15
King James Version (1769)
15 Who both killed the Lord Jesus, and their own prophets, and have persecuted us; and they please not God, and are contrary to all men:
In 1 Thessalonians 2:15, Paul identifies the guilt of certain unbelieving Jews who opposed the gospel by killing the Lord Jesus and the prophets, persecuting the early Christians like Paul and his companions, and actively hindering the spread of salvation to Gentiles; this underscores their failure to please God and their enmity toward all people, as their actions contradicted God's inclusive redemptive plan for humanity through Christ.