Marcion had founded his conception of Christianity on a new canon of Scripture,[70] which seems to have enjoyed the same authority among his followers as was ascribed to the Old Testament in orthodox Christendom. In the Gnostic schools, which likewise rejected the Old Testament altogether or in part, Evangelic and Pauline writings were, by the middle of the second century, treated as sacred texts and made use of to confirm their theological speculations.[71] On the other hand, about the year 150 the main body of Christendom had still no collection of Gospels and Epistles possessing equal authority with the Old Testament, and, apart from Apocalypses, no new writings at all, which as such, that is, as sacred texts, were regarded as inspired and authoritative.[72] Here we leave out of consideration that their content is a testimony of the Spirit. From the works of Justin it is to be inferred that the ultimate authorities were the Old Testament, the words of the Lord, and the communications of Christian prophets.[73] The memoirs of the Apostles (απομνημονευματα τον αποστολων = τα ευαγγελια) owed their significance solely to the fact that they recorded the words and history of the Lord and bore witness to the fulfilment of Old Testament predictions. There is no mention whatever of apostolic epistles as holy writings of standard authority.[74] But we learn further from Justin that the Gospels as well as the Old Testament were read in public worship (Apol. I. 67) and that our first three Gospels were already in use. We can, moreover, gather from other sources that other Christian writings, early and late, were more or less regularly read in Christian meetings.[75] Such writings naturally possessed a high degree of authority. As the Holy Spirit and the Church are inseparable, everything that edifies the Church originates with the Holy Spirit,[76] which in this, as well as every other respect, is inexhaustibly rich. Here, however, two interests were predominant from the beginning, that of immediate spiritual edification and that of attesting and certifying the Christian Kerygma ('η ασφαλεια των λογων). The ecclesiastical canon was the result of the latter interest, not indeed in consequence of a process of collection, for individual communities had already made a far larger compilation,[77] but, in the first instance, through selection, and afterwards, but not till then, through addition.

We must not think that the four Gospels now found in the canon had attained full canonical authority by the middle of the second century, for the fact—easily demonstrable—that the texts were still very freely dealt with about this period is in itself a proof of this.[78] Our first three Gospels contain passages and corrections that could hardly have been fixed before about the year 150. Moreover, Tatian's attempt to create a new Gospel from the four shews that the text of these was not yet fixed.[79] We may remark that he was the first in whom we find the Gospel of John[80] alongside of the Synoptists, and these four the only ones recognised. From the assault of the "Alogi" on the Johannine Gospel we learn that about 160 the whole of our four Gospels had not been definitely recognised even in Asia Minor. Finally, we must refer to the Gospel of the Egyptians, the use of which was not confined to circles outside the Church.[81]

From the middle of the second century the Encratites stood midway between the larger Christendom and the Marcionite Church as well as the Gnostic schools. We hear of some of these using the Gospels as canonical writings side by side with the Old Testament, though they would have nothing to do with the Epistles of Paul and the Acts of the Apostles.[82] But Tatian, the prominent Apologist, who joined them, gave this sect a more complete canon, an important fact about which was its inclusion of Epistles of Paul. Even this period, however, still supplies us with no testimony as to the existence of a New Testament canon in orthodox Christendom, in fact the rise of the so-called "Montanism" and its extreme antithesis, the "Alogi," in Asia Minor soon after the middle of the second century proves that there was still no New Testament canon there; for, if such an authoritative compilation had existed, these movements could not have arisen. If we gather together all the indications and evidence bearing on the subject, we shall indeed be ready to expect the speedy appearance in the Church of a kind of Gospel canon comprising the four Gospels;[83] but we are prepared neither for this being formally placed on an equality with the Old Testament, nor for its containing apostolic writings, which as yet are only found in Marcion and the Gnostics. The canon emerges quite suddenly in an allusion of Melito of Sardis preserved by Eusebius,[84] the meaning of which is, however, still dubious; in the works of Irenæus and Tertullian; and in the so-called Muratorian Fragment. There is no direct account of its origin and scarcely any indirect; yet it already appears as something to all intents and purposes finished and complete.[85] Moreover, it emerges in the same ecclesiastical district where we were first able to show the existence of the apostolic regula fidei. We hear nothing of any authority belonging to the compilers, because we learn nothing at all of such persons.[86] And yet the collection is regarded by Irenæus and Tertullian as completed. A refusal on the part of the heretics to recognise this or that book is already made a severe reproach against them. Their Bibles are tested by the Church compilation as the older one, and the latter itself is already used exactly like the Old Testament. The assumption of the inspiration of the books; the harmonistic interpretation of them; the idea of their absolute sufficiency with regard to every question which can arise and every event which they record; the right of unlimited combination of passages; the assumption that nothing in the Scriptures is without importance; and, finally, the allegorical interpretation: are the immediately observable result of the creation of the canon.[87]

The probable conditions which brought about the formation of the New Testament canon in the Church, for in this case we are only dealing with probabilities, and the interests which led to and remained associated with it can only be briefly indicated here.[88]

The compilation and formation of a canon of Christian writings by a process of selection[89] was, so to speak, a kind of involuntary undertaking of the Church in her conflict with Marcion and the Gnostics, as is most plainly proved by the warnings of the Fathers not to dispute with the heretics about the Holy Scriptures,[90] although the New Testament was already in existence. That conflict necessitated the formation of a new Bible. The exclusion of particular persons on the strength of some apostolic standards, and by reference to the Old Testament, could not be justified by the Church in her own eyes and those of her opponents, so long as she herself recognised that there were apostolic writings, and so long as these heretics appealed to such. She was compelled to claim exclusive possession of everything that had a right to the name "apostolic," to deny it to the heretics, and to shew that she held it in the highest honour. Hitherto she had "contented" herself with proving her legal title from the Old Testament, and, passing over her actual origin, had dated herself back to the beginning of all things. Marcion and the Gnostics were the first who energetically pointed out that Christianity began with Christ, and that all Christianity was really to be tested by the apostolic preaching, that the assumed identity of Christian common sense with apostolic Christianity did not exist, and (so Marcion said) that the Apostles contradicted themselves. This opposition made it necessary to enter into the questions raised by their opponents. But, in point of content, the problem of proving the contested identity was simply insoluble, because it was endless and subject to question on every particular point. The "unconscious logic," that is the logic of self-preservation, could only prescribe an expedient. The Church had to collect everything apostolic and declare herself to be its only legal possessor. She was obliged, moreover, to amalgamate the apostolic with the canon of the Old Testament in such a way as to fix the exposition from the very first. But what writings were apostolic? From the middle of the second century great numbers of writings named after the Apostles had already been in circulation, and there were often different recensions of one and the same writing.[91] Versions which contained docetic elements and exhortations to the most pronounced asceticism had even made their way into the public worship of the Church. Above all, therefore, it was necessary to determine (1) what writings were really apostolic, (2) what form or recension should be regarded as apostolic. The selection was made by the Church, that is, primarily, by the churches of Rome and Asia Minor, which had still an unbroken history up to the days of Marcus Aurelius and Commodus. In making this choice, the Church limited herself to the writings that were used in public worship, and only admitted what the tradition of the elders justified her in regarding as genuinely apostolic. The principle on which she proceeded was to reject as spurious all writings, bearing the names of Apostles, that contained anything contradictory to Christian common sense, that is, to the rule of faith—hence admission was refused to all books in which the God of the Old Testament, his creation, etc., appeared to be depreciated,—and to exclude all recensions of apostolic writings that seemed to endanger the Old Testament and the monarchy of God. She retained, therefore, only those writings which bore the names of Apostles, or anonymous writings to which she considered herself justified in attaching such names,[92] and whose contents were not at variance with the orthodox creed or attested it. This selection resulted in the awkward fact that besides the four Gospels there was almost nothing but Pauline epistles to dispose of, and therefore no writings or almost none which, as emanating from the twelve Apostles, could immediately confirm the truth of the ecclesiastical Kerygma. This perplexity was removed by the introduction of the Acts of the Apostles[93] and in some cases also the Epistles of Peter and John, though that of Peter was not recognised at Rome at first. As a collection this group is the most interesting in the new compilation. It gives it the stamp of Catholicity, unites the Gospels with the Apostle (Paul), and, by subordinating his Epistles to the "Acta omnium apostolorum," makes them witnesses to the particular tradition that was required and divests them of every thing suspicious and insufficient.[94] The Church, however, found the selection facilitated by the fact that the content of the early Christian writings was for the most part unintelligible to the Christendom of the time, whereas the late and spurious additions were betrayed not only by heretical theologoumena, but also and above all by their profane lucidity. Thus arose a collection of apostolic writings, which in extent may not have been strikingly distinguished from the list of writings that for more than a generation had formed the chief and favourite reading in the communities.[95] The new collection was already exalted to a high place by the use of other writings being prohibited either for purposes of general edification or for theological ends.[96] But the causes and motives which led to its being formed into a canon, that is, being placed on a footing of complete equality with the Old Testament, may be gathered partly from the earlier history, partly from the mode of using the new Bible and partly from the results attending its compilation. First, Words of the Lord and prophetic utterances, including the written records of these, had always possessed standard authority in the Church; there were therefore parts of the collection the absolute authority of which was undoubted from the first.[97] Secondly, what was called "Preaching of the Apostles," "Teaching of the Apostles," etc., was likewise regarded from the earliest times as completely harmonious as well as authoritative. There had, however, been absolutely no motive for fixing this in documents, because Christians supposed they possessed it in a state of purity and reproduced it freely. The moment the Church was called upon to fix this teaching authentically, and this denotes a decisive revolution, she was forced to have recourse to writings, whether she would or not. The attributes formerly applied to the testimony of the Apostles, so long as it was not collected and committed to writing, had now to be transferred to the written records they had left. Thirdly, Marcion had already taken the lead in forming Christian writings into a canon in the strict sense of the word. Fourthly, the interpretation was at once fixed by forming the apostolic writings into a canon, and placing them on an equality with the Old Testament, as well as by subordinating troublesome writings to the Acts of the Apostles. Considered by themselves these writings, especially the Pauline Epistles, presented the greatest difficulties. We can see even yet from Irenæus and Tertullian that the duty of accommodating herself to these Epistles was forced upon the Church by Marcion and the heretics, and that, but for this constraint, her method of satisfying herself as to her relationship to them would hardly have taken the shape of incorporating them with the canon.[98] This shows most clearly that the collection of writings must not be traced to the Church's effort to create for herself a powerful controversial weapon. But the difficulties which the compilation presented so long as it was a mere collection vanished as soon as it was viewed as a sacred collection. For now the principle: "as the teaching of the Apostles was one, so also is the tradition" (μια 'η παντων γεγονε των αποστολων 'ωσπερ διδασκαλια 'ουτως δε και 'η παραδοσις) was to be applied to all contradictory and objectionable details.[99] It was now imperative to explain one writing by another; the Pauline Epistles, for example, were to be interpreted by the Pastoral Epistles and the Acts of the Apostles.[100] Now was required what Tertullian calls the "mixture" of the Old and New Testaments,[101] in consequence of which the full recognition of the knowledge got from the old Bible was regarded as the first law for the interpretation of the new. The formation of the new collection into a canon was therefore an immediate and unavoidable necessity if doubts of all kinds were to be averted. These were abundantly excited by the exegesis of the heretics; they were got rid of by making the writings into a canon. Fifthly, the early Christian enthusiasm more and more decreased in the course of the second century; not only did Apostles, prophets, and teachers die out, but the religious mood of the majority of Christians was changed. A reflective piety took the place of the instinctive religious enthusiasm which made those who felt it believe that they themselves possessed the Spirit.[102] Such a piety requires rules; at the same time, however, it is characterised by the perception that it has not the active and spontaneous character which it ought to have, but has to prove its legitimacy in an indirect and "objective" way. The breach with tradition, the deviation from the original state of things is felt and recognised. Men, however, conceal from themselves their own defects, by placing the representatives of the past on an unattainable height, and forming such an estimate of their qualities as makes it unlawful and impossible for those of the present generation, in the interests of their own comfort, to compare themselves with them. When matters reach this point, great suspicion attaches to those who hold fast their religious independence and wish to apply the old standards. Not only do they seem arrogant and proud, but they also appear disturbers of the necessary new arrangement which has its justification in the fact of its being unavoidable. This development of the matter was, moreover, of the greatest significance for the history of the canon. Its creation very speedily resulted in the opinion that the time of divine revelation had gone past and was exhausted in the Apostles, that is, in the records left by them. We cannot prove with certainty that the canon was formed to confirm this opinion, but we can show that it was very soon used to oppose those Christians who professed to be prophets or appealed to the continuance of prophecy. The influence which the canon exercised in this respect is the most decisive and important. That which Tertullian, as a Montanist, asserts of one of his opponents: "Prophetiam expulit, paracletum fugavit" ("he expelled prophecy, he drove away the Paraclete"), can be far more truly said of the New Testament which the same Tertullian as a Catholic recognised. The New Testament, though not all at once, put an end to a situation where it was possible for any Christian under the inspiration of the Spirit to give authoritative disclosures and instructions. It likewise prevented belief in the fanciful creations with which such men enriched the history of the past, and destroyed their pretensions to read the future. As the creation of the canon, though not in a hard and fast way, fixed the period of the production of sacred facts, so it put down all claims of Christian prophecy to public credence. Through the canon it came to be acknowledged that all post-apostolic Christianity is only of a mediate and particular kind, and can therefore never be itself a standard. The Apostles alone possessed the Spirit of God completely and without measure. They only, therefore, are the media of revelation, and by their word alone, which, as emanating from the Spirit, is of equal authority with the word of Christ, all that is Christian must be tested.[103]

The Holy Spirit and the Apostles became correlative conceptions (Tertull., de pudic. 21). The Apostles, however, were more and more overshadowed by the New Testament Scriptures; and this was in fact an advance beyond the earlier state of things, for what was known of the Apostles? Accordingly, as authors of these writings, they and the Holy Spirit became correlative conceptions. This led to the assumption that the apostolic writings were inspired, that is, in the full and only intelligible sense attached to the word by the ancients.[104] By this assumption the Apostles, viewed as prophets, received a significance quite equal to that of Old Testament writers.[105] But, though Irenæus and Tertullian placed both parties on a level, they preserved a distinction between them by basing the whole authority of the New Testament on its apostolic origin, the concept "apostolic" being much more comprehensive than that of "prophet." These men, being Apostles, that is men chosen by Christ himself and entrusted with the proclamation of the Gospel, have for that reason received the Spirit, and their writings are filled with the Spirit. To the minds of Western Christians the primary feature in the collection is its apostolic authorship.[106] This implies inspiration also, because the Apostles cannot be inferior to the writers of the Old Testament. For that very reason they could, in a much more radical way, rid the new collection of everything that was not apostolic. They even rejected writings which, in their form, plainly claimed the character of inspiration; and this was evidently done because they did not attribute to them the degree of authority which, in their view, only belonged to that which was apostolic.[107] The new canon of Scripture set up by Irenæus and Tertullian primarily professes to be nothing else than a collection of apostolic writings, which, as such, claim absolute authority.[108] It takes its place beside the apostolic rule of faith; and by this faithfully preserved possession, the Church scattered over the world proves herself to be that of the Apostles.

But we are very far from being able to show that such a rigidly fixed collection of apostolic writings existed everywhere in the Church about the year 200. It is indeed continually asserted that the Antiochian and Alexandrian Churches had at that date a New Testament which, in extent and authority, essentially coincided with that of the Roman Church; but this opinion is not well founded. As far as the Church of Antioch is immediately concerned, the letter of Bishop Serapion (whose episcopate lasted from about 190 to about 209), given in Eusebius (VI. 12), clearly shows that Cilicia and probably also Antioch itself as yet possessed no such thing as a completed New Testament. It is evident that Serapion already holds the Catholic principle that all words of Apostles possess the same value to the Church as words of the Lord; but a completed collection of apostolic writings was not yet at his disposal.[109] Hence it is very improbable that Theophilus, bishop of Antioch, who died as early as the reign of Commodus, presupposed such a collection. Nor, in point of fact, do the statements in the treatise "ad Autolycum" point to a completed New Testament.[110] Theophilus makes diligent use of the Epistles of Paul and mentions the evangelist John (C. I. 1.) as one of the bearers of the Spirit. But with him the one canonical court of appeal is the Scriptures of the Old Testament, that is, the writings of the Prophets (bearers of the Spirit). These Old Testament Prophets, however, are continued in a further group of "bearers of the Spirit," which we cannot definitely determine, but which at any rate included the authors of the four Gospels and the writer of the Apocalypse. It is remarkable that Theophilus has never mentioned the Apostles. Though he perhaps regards them all, including Paul, as "bearers of the Spirit," yet we have no indication that he looked on their Epistles as canonical. The different way he uses the Old Testament and the Gospels on the one hand and the Pauline Epistles on the other is rather evidence of the contrary. Theophilus was acquainted with the four Gospels (but we have no reference to Mark), the thirteen Epistles of Paul (though he does not mention Thessalonians), most probably also with the Epistle to the Hebrews, as well as 1st Peter and the Revelation of John. It is significant that no single passage of his betrays an acquaintance with the Acts of the Apostles.[111]

It might certainly seem venturesome, on the basis of the material found in Theophilus and the original document of the first six books of the Apostolic Constitutions, to conclude that the formation of a New Testament canon was not everywhere determined by the same interest and therefore did not everywhere take a similar course. It might seem hazardous to assume that the Churches of Asia Minor and Rome began by creating a fixed canon of apostolic writings, which was thus necessarily declared to be inspired, whereas other communities applied or did not deny the notion of inspiration to a great number of venerable and ancient writings not rigidly defined, and did not make a selection from a stricter historical point of view, till a later date. But the latter development not only corresponds to the indication found in Justin, but in my opinion may be verified from the copious accounts of Clement of Alexandria.[112] In the entire literature of Greeks and barbarians Clement distinguishes between profane and sacred, i.e., inspired writings. As he is conscious that all knowledge of truth is based on inspiration, so all writings, that is all parts, paragraphs, or sentences of writings which contain moral and religious truth are in his view inspired.[113] This opinion, however, does not exclude a distinction between these writings, but rather requires it. (2) The Old Testament, a fixed collection of books, is regarded by Clement, as a whole and in all its parts, as the divine, that is, inspired book par excellence. (3) As Clement in theory distinguishes a new covenant from the old, so also he distinguishes the books of the new covenant from those of the old. (4) These books to which he applies the formula "Gospel" (το ευαγγελιον) and "Apostles" ('οι αποστολοι) are likewise viewed by him as inspired, but he does not consider them as forming a fixed collection. (5) Unless all appearances are deceptive, it was, strictly speaking, only the four Gospels that he considered and treated as completely on a level with the Old Testament. The formula: 'ο νομος και 'οι προφηται και το ευαγγελιον ("the Law and the Prophets and the Gospel") is frequently found, and everything else, even the apostolic writings, is judged by this group.[114] He does not consider even the Pauline Epistles to be a court of appeal of equal value with the Gospels, though he occasionally describes them as γραφαι.[115] A further class of writings stands a stage lower than the Pauline Epistles, viz., the Epistles of Clement and Barnabas, the Shepherd of Hermas, etc. It would be wrong to say that Clement views this group as an appendix to the New Testament, or as in any sense Antilegomena. This would imply that he assumed the existence of a fixed collection whose parts he considered of equal value, an assumption which cannot be proved.[116] (6) As to certain books, such as the "Teaching of the Apostles," the "Kerygma of Peter," etc., it remains quite doubtful what authority Clement attributed to them.[117] He quotes the Διδαχη as γραφη. (7) In determining and estimating the sacred books of the New Testament Clement is manifestly influenced by an ecclesiastical tradition, for he recognises four Gospels and no more because that was the exact number handed down. This tradition had already applied the name "apostolic" to most Christian writings which were to be considered as γραφαι, but it had given the concept "apostolic" a far wider content than Irenæus and Tertullian,[118] although it had not been able to include all the new writings which were regarded as sacred under this idea. (Hermas). At the time Clement wrote, the Alexandrian Church can neither have held the principle that all writings of the Apostles must be read in the Church and form a decisive court of appeal like the Old Testament, nor have believed that nothing but the Apostolic—using this word also in its wider sense—has any claim to authority among Christians. We willingly admit the great degree of freedom and peculiarity characteristic of Clement, and freely acknowledge the serious difficulties inseparable from the attempt to ascertain from his writings what was regarded as possessing standard authority in the Church. Nevertheless it may be assumed with certainty that, at the time this author wrote, the content of the New Testament canon, or, to speak more correctly, its reception in the Church and exact attributes had not yet been finally settled in Alexandria.

The condition of the Alexandrian Church of the time may perhaps be described as follows: Ecclesiastical custom had attributed an authority to a great number of early Christian writings without strictly defining the nature of this authority or making it equal to that of the Old Testament. Whatever professed to be inspired, or apostolic, or ancient, or edifying was regarded as the work of the Spirit and therefore as the Word of God. The prestige of these writings increased in proportion as Christians became more incapable of producing the like themselves. Not long before Clement wrote, however, a systematic arrangement of writings embodying the early Christian tradition had been made in Alexandria also. But, while in the regions represented by Irenæus and Tertullian the canon must have arisen and been adopted all at once, so to speak, it was a slow process that led to this result in Alexandria. Here also the principle of apostolicity seems to have been of great importance for the collectors and editors, but it was otherwise applied than at Rome. A conservative proceeding was adopted, as they wished to insure as far as possible the permanence of ancient Christian writings regarded as inspired. In other words, they sought, wherever practicable, to proclaim all these writings to be apostolic by giving a wider meaning to the designation and ascribing an imaginary apostolic origin to many of them. This explains their judgment as to the Epistle to the Hebrews, and how Barnabas and Clement were described by them as Apostles.[119] Had this undertaking succeeded in the Church, a much more extensive canon would have resulted than in the West. But it is more than questionable whether it was really the intention of those first Alexandrian collectors to place the great compilation thus produced, as a New Testament, side by side with the Old, or, whether their undertaking was immediately approved in this sense by the Church. In view of the difference of Clement's attitude to the various groups within this collection of γραφαι, we may assert that in the Alexandrian Church of that time Gospels and Apostles were indeed ranked with the Law and the Prophets, but that this position of equality with the Old Testament was not assigned to all the writings that were prized either on the score of inspiration or of apostolic authority. The reason of this was that the great collection of early Christian literature that was inspired and declared to be apostolic could hardly have been used so much in public worship as the Old Testament and the Gospels.