But its bearing upon the history of Jesus had still to be determined. What position do Weisse and Wilke take up towards the hypothesis of a tradition lying behind the Gospel of Mark? If it be once admitted that the whole Gospel tradition, so far as concerns its plan, goes back to a single writer, who has created the connexion between the different events—for neither Weisse nor Wilke regards the connexion of the sections as historical—does not the possibility naturally suggest itself that the narrative of the events themselves, not merely the connexion in which they appear in Mark, is to be set down to the account of the author of the Gospel? Weisse and Wilke had not suspected how great a danger arises when, of the three witnesses who represent the tradition, only one is allowed to stand, and the tradition is recognised and allowed to exist in this one written form only. The triple embankment held; will a single one bear the strain? The following considerations have to be taken into account. The criticism of the Fourth Gospel compels us to recognise that a Gospel _may_ have a purely literary origin. This discovery dawned upon Bauer at a time when he was still disinclined to accept Wilke’s conclusions regarding Mark. But when he had recognised the truth of the latter he felt compelled by the combination of the two to accept the idea that Mark also might be of purely literary origin. For Weisse and Wilke the Marcan hypothesis had not implied this result, because they continued to combine with it the wider hypothesis of a general tradition, holding that Matthew and Luke used the collection of “Logia,” and also owed part of their supplementary matter to a free use of floating tradition, so that Mark, it might almost be said, merely supplied them with the formative principle by means of which they might order their material. But what if Papias’s statement about the collection of “Logia” were worthless, and could be shown to be so by the literary data? In that case Matthew and Luke would be purely literary expansions of Mark, and like him, purely literary inventions. In this connexion Bauer attaches decisive importance to the phenomena of the birth‐stories. If these had been derived from tradition they could not differ from each other as they do. If it is suggested that tradition had produced a large number of independent, though mutually consistent, stories of the childhood, out of which the Evangelists composed their opening narratives, this also is found to be untenable, for these narratives are not composite structures. The separate stories of which each of these two histories of the childhood consists could not have been formed independently of one another; none of them existed by itself; each points to the others and is informed by a view which implies the whole. The histories of the childhood are therefore not literary versions of a tradition, but literary inventions.