B. J. Oropeza’s study of the disputed and undisputed Pauline epistles aims to show how the subject of apostasy was perceived in various New Testament communities. The person of Paul is first evaluated in the accusations against his own defection from the Jewish sect of the Pharisees, as narrated in the letter to the Galatians. Oropeza then reviews the Thessalonian letters—Paul’s earliest. The remaining Pauline epistles are covered in the order in which they were written, including the disputed letters of Ephesians and Colossians.