Several additional letters bearing Paul's name are disputed among scholars, namely Ephesians, Colossians, 2 Thessalonians, 1 and 2 Timothy, and Titus. Scholarly opinion is sharply divided on whether or not Colossians and 2 Thessalonians are genuine letters of Paul. The remaining four contested epistles – Ephesians, as well as the three known as the Pastoral epistles (1 and 2 Timothy, and Titus) – have been labeled pseudepigraphical works by most critical scholars.[4][5][6] Some scholars have proposed that Paul may have used an amanuensis, or secretary, in writing the disputed letters.[7]