Scholars agree that the letters are the more trustworthy sources for knowledge of Paul and his teachings. Much later legendary sources such as the Acts of the Apostles and the Acts of Paul frequently contradict what is known from the letters and must be used with extreme caution. e question of which letters in the New Testament attributed to Paul are authentic has long been a matter of dispute among scholars, although there is a strong consensus that some are his and that others cannot be. Broad agreement exists that Romans, 1 and 2 Corinthians, Galatians, Philippians, 1 esssalonians and Philemon were written by Paul. Likewise, 1 and 2 Timothy and Titus were written by a Paulinist a generation or more a" er Paul’s death. Opinion tilts against the authenticity of Ephesians, but is divided regarding 2 essalonians and Colossians. e seven ‘undisputed’ letters must be the starting-point for understanding Paul’s thought.