The Fourth is clearly the latest of the Gospels, for it does not attempt fully to reproduce the facts presented in the other three, but assumes their existence. Its doctrines are also more fully developed, and its aim is not simply the giving of historical facts and teachings, but also, as it clearly states, that those reading it might believe that Jesus was the Christ, the son of God, and that believing they might have life in his name (xx. 31). The motive that produced it was, therefore, apologetic and evangelical rather than merely historical.
[Sidenote: Review of growth of the Gospels]
A detailed comparison of the differences between the Gospels, as well as of their many points of likeness which often extend to exact verbal agreement, furnishes the data for reconstructing their history. In general the resulting conclusions are in perfect harmony with the testimony of the Church Fathers. Mark, the shortest and more distinctively narrative Gospel, is clearly the oldest of the four. Possibly it was originally intended to be the supplement of the other early source, Matthew's Sayings of Jesus, now known only through quotations. These two earliest known Christian records of the work of the Master in their original form were the chief sources quoted in the First and Third Gospels. So largely is Mark thus reproduced that, if lost, it would be possible from these to restore the book with the exception of only a few verses. But in addition, Matthew and Luke each have material peculiar to themselves, suggesting other independent written as well as oral sources. To such shorter written Gospels, and also to the oral testimony of eyewitnesses, Luke refers in his prologue. In the Fourth Gospel, the doctrinal motive already apparent in Matthew, and prominent in the Church at the beginning of the second Christian century, takes the precedence of the merely historical. A distinct source, the personal observation of the beloved disciple, probably also furnishes the majority of the illustrations which are here so effectively arrayed.
[Sidenote: Influences that produced the apocalypses]
More complex were the influences which produced the single example of the third type of New Testament literature,—the Apocalypse, or Book of Revelation. The so-called apocalyptic type of literature was a characteristic product of later Judaism. The Book of Daniel is the most familiar example. Although in the age of scribism the voice of the prophets was regarded as silent, and the only authority recognized was that of the past, the popular Messianic hopes of the people continued to find expression anonymously in the form of apocalypses. In the periods of their greatest distress Jews and Christians found encouragement and inspiration in the pictures of the future. Since the present situation was so hopeless, they looked for a supernatural transformation, which would result in the triumph of the right and the establishment of the rule of the Messiah. Underlying all the apocalypses is the eternal truth voiced by the poet: "God's in his heaven and all's right with the world."
[Sidenote: Origin of the Book of Revelation]
The immediate historical background of the Apocalypse is the bitter struggle between Christianity and heathenism. Rome has become drunk with the blood of the saints and the blood of the martyrs of Jesus (xvii. 6). The contest centres about the worship of the beast,—that is, Caesar. The book possibly includes older apocalypses which reflect earlier conflicts, but in its present form it apparently comes from the closing years of Domitian's reign. The obvious aim of its Jewish Christian writer was to encourage his readers by glowing pictures of the coming victory of the Lamb, and thus to steel them for unfaltering resistance to the assaults of heathenism. The purpose which actuated the writer was therefore in certain respects the same as that which led Paul to write his letter to the persecuted church of Thessalonica, although the form in which that purpose was realized was fundamentally different.
[Sidenote: The literary activity of the first four centuries]
Many other apocalypses were written by the early Christians. The one recently discovered and associated with the name of Peter is perhaps the most important. Thus, the second half of the first century after the death of Jesus witnessed the birth of a large Christian literature, consisting of epistles, gospels, and apocalypses. The work of the next three centuries was the appreciation and the selection of the books which, to-day constitute our New Testament. The influences which led to this consummation may be followed almost as clearly as those which produced the individual books.
[Sidenote: Influences that led to the canonization of the Gospels]