The following books are considered the pastoral epistles:

• 1 Timothy
• 2 Timothy
• Titus

These books writing styles and use of language differs from the other epistles written by Paul, which means that Paul might not be the author although the books claim that he is.

More reasons why some dispute these books' authenticity:

Norman Perrin argued that Paul's travels to Crete (Titus 1:5-6), again to Ephesus (1 Timothy 1:3), Nicopolis (Titus 3:12), and Troas (2 Timothy 1:15, 4:13) cannot be fit into any reconstruction of Paul's life or works as determined from the other epistles or from Acts.

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Other reasons for a 2nd-century date have been argued. The Pastoral Epistles lay out church organisation concerning the character and requirements for bishops, elders, deacons, and widows. Some scholars have claimed that these offices could not have appeared during Paul's lifetime. In terms of theology, some scholars claim that the Pastorals reflect more the characteristics of 2nd century (Proto-orthodox) church thought, than those of the 1st century.

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Lastly, some have argued that the Pastorals condemn forms of Hellenic mysticism and gnosticism, which were seen as not significant in the 1st century.

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However, many scholars consider these arguments weak and that these arguments do not necessary proof anything.