What does 1 Thessalonians 2:15 mean?

Those people even killed the Lord Jesus and the prophets, and they drove us out too. They’re always fighting against God and trying to stop us from sharing the message with people who aren’t Jewish, so those people can’t be saved. They keep piling up guilt for themselves, and in the end, God’s judgment will catch up with them. 1 Thessalonians 2:15 - Modern Text Bible

(Paul is describing the opposition from some of his fellow Jews who rejected Jesus and tried to block the spread of the gospel. He’s not condemning all Jews, but those who actively oppose the message.)