In an author thus abounding with references and allusions to the Scriptures, there is not one to any apocryphal Christian writing whatever. This is a broad line of distinction between our sacred books and the pretensions of all others. The force of the testimony of the period which we have considered is greatly strengthened by the observation, that it is the testimony, and the concurring testimony, of writers who lived in countries remote from one another. Clement flourished at Rome, Ignatius at Antioch, Polycarp at Smyrna, Justin Martyr in Syria, and Irenaeus in France. XI. Omitting Athenagoras and Theophilus, who lived about this time; (Lardner, vol. i. p. 400 & 422.) in the remaining works of the former of whom are clear references to Mark and Luke; and in the works of the latter, who was bishop of Antioch, the sixth in succession from the apostles, evident allusions to Matthew and John, and probable allusions to Luke (which, considering the nature of the compositions, that they were addressed to heathen readers, is as much as could be expected); observing also, that the works of two learned Christian writers of the same age, Miltiades and Pantaenus, (Lardner, vol. i. p.413, 450.) are now lost: of which Miltiades Eusebius records, that his writings "were monuments of zeal for the Divine Oracles;" and which Pantaenus, as Jerome testifies, was a man of prudence and learning, both in the Divine Scriptures and secular literature, and had left many commentaries upon the Holy Scriptures then extant. Passing by these without further remark, we come to one of the most voluminous of ancient Christian writers, Clement of Alexandria (Lardner, vol. ii. p. 469.). Clement followed Irenaeus at the distance of only sixteen years, and therefore may be said to maintain the series of testimony in an uninterrupted continuation.