Early in the second century the motives which had originally led certain Christians to write the four Gospels induced the Church to regard those books as the most authentic, and therefore authoritative, records of the life and teachings of the Master. We have no distinctive history of the process. It was gradual, and probably almost unconscious. The fact that three of the Gospels were associated with the names of apostles and the other with Luke, the faithful companion of Paul, undoubtedly tended to establish their authority; but the chief canonizing influence was the need of such records for private and public reading. The production, early in the second century, of spurious gospels, like the Gospel of Marcion, written to furnish a literary basis for certain heretical doctrines, also the desire of the Church Fathers to have records to which they could appeal as authoritative hastened the formation of the first New Testament canon. The use of the Gospels in the services of the church, which probably began before the close of the first Christian century, by degrees gave them an authority equal to that of the Old Testament Scriptures. The earliest canon consisted simply of these four books. They seem to have been universally accepted by the Western Church by the middle of the second century. About 152 A.D. Justin Martyr, in proving his positions, refers to the Memoirs of the Apostles compiled by Christ's apostles and those who associated with them, and during the same decade his pupil Tatian made his Diatessaron by combining our present four Gospels.
[Sidenote: The second edition of the New Testament]
Meantime the natural desire to supplement the teachings of Jesus by those of the Apostles led the Church to single out certain of the epistles and associate them with the Gospels. Already in the first century the apostolic epistles and traditions were cherished by the individual churches to which they had been first directed. In time, however, the need for a written record of the apostolic teachings and work became widely felt. Hence, by the end of the second century, Acts and the thirteen Pauline epistles, First Peter, First John, and the Apocalypse, were by common consent placed side by side with the Gospels, at least by the leaders of the Western Church.
[Sidenote: The disputed books]
Regarding the authority of the remaining New Testament books, Hebrews, James, First and Second John, and Jude, opinion long remained undecided. Concerning them an earnest discussion was carried on for the next two centuries. By certain leaders in the Church they were regarded as authoritative, while elsewhere and at different periods, other books, like the Gospel to the Hebrews, the Epistle of Barnabas, Clement's Epistle to the Corinthians, the Shepherd of Hermas, and the Apocalypse of Peter, were included in the canon and even given the priority over the disputed books later included in our New Testament.
[Sidenote: Final completion of the New Testament canon]
The final decision represents the result of an open and prolonged and yet quiet consideration of the merits of each book and of its claims to apostolic authority. The ablest scholars of the early Christian Church devoted their best energies to the problem. Gradually, thoughtfully, prayerfully, and by testing them in the laboratory of experience, the Christian world separated the twenty-seven books which we find to-day in our New Testament from the much larger heritage of kindred writings which come from the early Christian centuries. Time and later consideration have fully approved the selection and confirmed the belief that through the minds of consecrated men God was realizing his purpose for mankind. As is well known, at the Council of Carthage, in 397 A.D., the Western world at last formally accepted them, although the Syrian churches continued for centuries to retain a somewhat different canon.
[Sidenote: Conclusions from this study of the influences that produced the New Testament]
This brief historical study of the origin of our New Testament has demonstrated twelve significant facts: (1) That the original authors of the different books never suspected that their writings would have the universal value and authority which they now rightfully enjoy. (2) That they at first regarded them as merely an imperfect substitute for verbal teaching and personal testimony. (3) That in each case they had definite individuals and conditions in mind. (4) That the needs of the rapidly growing Church and the varied and trying experiences through which it passed were all potent factors in influencing the authors of the New Testament to write. (5) That certain books, especially the historical, like Luke and Matthew, are composite, consisting of material taken bodily from older documents, like Matthew's Sayings of Jesus and the original narrative of Mark. (6) That our New Testament books are only a part of a much larger early Christian literature. (7) That they are unquestionably, however, the most valuable and representative writings of that larger literature. (8) That they were only gradually selected and ascribed a value and authority equal to that of the Old Testament writings. (9) That there were three distinct stages in the formation of the New Testament canon: the gospels were first recognized as authorative; then Acts, the Apostolic Epistles, and the Apocalypse; and last of all, the complete canon. (10) That the canon was formed as a result of the need felt by later generations, in connection with their study and worship, for reliable records of the history and teachings of Christianity. (11) That the principles of selection depended ultimately upon the intrinsic character of the books themselves and the authority ascribed to their reputed authors. (12) That the process of selection continued for fully three centuries, and that the results represent the thoughtful, enlightened judgment of thousands of devoted Christians. Thus through definite historical forces and the minds and wills of men, the Eternal Father gradually perfected the record of his supreme revelation, to humanity.