his master said. If any church, therefore, holds this epistle as Paul's, let it be commended for this also. For not without reason have the men of old handed it down as Paul's. But who wrote the epistle, in truth God knows. Yet the account which has reached us [is twofold], some saying that Clement, who was bishop of the Romans, wrote the epistle, others, that it was Luke, he who wrote the Gospel and the Acts." Modern scholars consider the evidence against Pauline authorship of Hebrews too solid for dispute. Donald Guthrie, in his New Testament Introduction (1976), commented that "most modern writers find more difficulty in imagining how this Epistle was ever attributed to Paul than in disposing of the theory." Harold Attridge states that "it is certainly not a work of the apostle"; Daniel Wallace states, "the arguments against Pauline authorship [...] are conclusive." As a result, few supporters of Pauline authorship remain. As Richard Heard notes, in his Introduction to The New Testament, "modern critics have confirmed that the epistle cannot be attributed to Paul and have for the most part agreed with Origen's judgement, 'But as to who wrote the epistle, God knows the truth.'" History of the Pauline canon There are no preserved lists of a Christian New Testament canon from the 1st century and early 2nd century. The Second Epistle of Peter, a pseudepigrapha written between 60-130 and attributed to Saint Peter refers to the Pauline epistles, but does not specify which ones it is referring to. Pope Clement I (c. 35-99 AD) quotes from 1 Corinthians and alludes to Paul's epistles to the Romans, Galatians, Ephesians, and Philippians, Titus, 1 Timothy, numerous phrases from the Epistle to the Hebrews, and possible material from the Acts of the Apostles. Ignatius of Antioch (died c. 110 AD) appears to have quoted from Romans, 1 Corinthians, Ephesians, Colossians, and 1 Thessalonians. Polycarp of Smyrna (69–156 AD) not only quoted from 2 Thessalonians but also the Gospel of Matthew, Gospel of Mark, Gospel of Luke, Acts of the Apostles, 1 Corinthians, 2 Corinthians, Galatians, Ephesians, Philippians, 1 Thessalonians, 1 Timothy, 2 Timothy, Epistle to the Hebrews, 1 Peter, 1 John, 3 John. The Epistle of Barnabas, written between 96 and 135, quotes from Galatians. Clement of Alexandria (c. 150-215 AD) quotes all the books of the New Testament with the exception of Philemon, James, 2 Peter,