It must, however, be borne in mind that it is quite foreign to our purpose to enter into any exhaustive discussion of the literary problem presented by the Acts of the Apostles. We shall confine ourselves to such points as seem sufficient or best fitted to test the character of the composition, and we shall not hesitate to pass without attention questions of mere literary interest, and strictly limit our examination to such prominent features as present themselves for our purpose. It is generally admitted, although not altogether without exception,(1) that the author of our third synoptic Gospel likewise composed the Acts of the Apostles. The linguistic and other peculiarities which distinguish the Gospel are equally prominent in the Acts. This fact, whilst apparently offering greatly increased facilities for identifying the author, and actually affording valuable material for estimating his work, does not, as we have already remarked, really do much towards solving the problem of the authorship, inasmuch as the Gospel, like its continuation, is anonymous, and we possess no more precise or direct evidence in connection with the one than in the case of the other. We have already so fully examined the testimony for the third Gospel that it is unnecessary for us to recur to it. From about the end of the second century we find the Gospel and Acts of the {33} Apostles ascribed by ecclesiastical writers to Luke, the companion of the Apostle Paul. The fallibility of tradition, and the singular phase of literary morality exhibited during the early ages of Christianity, render such testimony of little or no value, and in the almost total absence of the critical faculty a rank crop of pseudonymic writings sprang up and flourished during that period.(1) Some of the earlier chapters of this work have given abundant illustrations of this fact. It is absolutely certain, with regard to the works we are considering, that Irenaeus is the earliest writer known who ascribes them to Luke, and that even tradition, therefore, cannot be traced beyond the last quarter of the second century. The question is--does internal evidence confirm or contradict this tradition? Luke, the traditional author, is not mentioned by name in the Acts of the Apostles.(2) In the Epistle to Philemon his name occurs, with those of others, who send greeting, verse 23, "There salute thee Epaphras, my fellow-prisoner in Christ Jesus; 24. Marcus, Aristarchus, Demas, Luke, my fellow-labourers." In the Epistle to the Colossians, iv. 14, mention is also made of him:--"Luke, the beloved physician,(3) salutes you, and Demas." And again, in the 2 Epistle to Timothy, iv. 10:--"For {34} Demas forsook me, having loved this present world, and departed into Thessalouica, Crescens to Galatia, Titus unto Dalmatia: 11. Only Luke is with me."