III. Polemic Works.
Defense of Origen ('Apologia huper 'Origenous). This was the joint work of Eusebius and Pamphilus, as is distinctly stated by Eusebius himself in his H. E. VI. 33, by Socrates, H. E. III. 7, by the anonymous collector of the Synodical Epistles (Ep. 198), and by Photius, Bibl. 118. The last writer informs us that the work consisted of six books, the first five of which were written by Eusebius and Pamphilus while the latter was in prison, the last book being added by the former after Pamphilus' death (see above, p. 9). There is no reason to doubt the statement of Photius, and we may therefore assign the first five books to the years 307-309, and assume that the sixth was written soon afterward. The Defense has perished, with the exception of the first book, which was translated by Rufinus (Rufin. ad Hieron. I. 582), and is still extant in his Latin version. Rufinus ascribed this book expressly to Pamphilus, and Pamphilus' name alone appears in the translation. Jerome (Contra Ruf. I. 8; II. 15, 23; III. 12) maintains that the whole work was written by Eusebius, not by Pamphilus, and accuses Rufinus of having deliberately substituted the name of the martyr Pamphilus for that of the Arianizing Eusebius in his translation of the work, in order to secure more favorable acceptance for the teachings of Origen. Jerome's unfairness and dishonesty in this matter have been pointed out by Lightfoot (p. 340). In spite of his endeavor to saddle the whole work upon Eusebius, it is certain that Pamphilus was a joint author of it, and it is quite probable that Rufinus was true to his original in ascribing to Pamphilus all the explanations which introduce and connect the extracts from Origen, which latter constitute the greater part of the book. Eusebius may have done most of his work in connection with the later books.
The work was intended as a defense of Origen against the attacks of his opponents (see Eusebius' H. E. VI. 33, and the Preface to the Defense itself). According to Socrates (H. E. VI. 13), Methodius, Eustathius, Apollinaris, and Theophilus all wrote against Origen. Of these only Methodius had written before the composition of the Defense, and he was expressly attacked in the sixth book of that work, according to Jerome (Contra Ruf. I. 11). The wide opposition aroused against Origen was chiefly in consequence not of his personal character, but of his theological views. The Apology, therefore, seems to have been devoted in the main to a defense of those views over against the attacks of the men that held and taught opposite opinions, and may thus be regarded as in some sense a regular polemic. The extant book is devoted principally to a discussion of Origen's views on the Trinity and the Incarnation. It is not printed in Migne's edition of Eusebius' Opera, but is published in the various editions of Origen's works (in Lommatzsch's edition, XXIV. 289-412). For further particulars in regard to the work, see Delarue's introduction to it (Lommatzsch, XXIV. 263 sq.), and Lightfoot's article on Eusebius, pp. 340 and 341.
Against Marcellus, Bishop of Ancyra (kata Markellou tou 'Ankuras episkopou). The occasion of this work has been already described (see p. 25), and is explained by Eusebius himself in Book II. chap. 4. The work must have been written soon after the Council at which Marcellus was condemned. It aims simply to expose his errors, exegetical as well as theological. The work consists of two books, and is still extant (Opera, VI. 707-824).
On the Theology of the Church, a Refutation of Marcellus (hoi pros M?rkellon ?lenchoi peri tes ekklesiastikes Theologias). The occasion of this work is stated in the first chapter. In the previous work Eusebius had aimed merely to expose the opinions of Marcellus, but in this he devotes himself to their refutation, fearing that some might be led astray by their length and plausibility. The work, which consists of three books, is still extant, and is given by Migne in the Opera, VI. 825-1046. Both it and the preceding are published with the Contra Hieroclem in Gaisford's Euseb. Pamph. contra Hieroclem et Marcellum, Oxon. 1852. Zahn has written a valuable monograph entitled Marcellus von Ancyra (Gotha, 1867).
Against the Manicheans. Epiphanius (Haer. LXVI. 21) mentions, among other refutations of the Manicheans, one by our Eusebius. The work is referred to nowhere else, and it is possible that Epiphanius was mistaken in his reference, or that the refutation he has in mind formed only a part of some other work, but we are hardly justified in asserting, as Lightfoot does, that the work cannot have existed.
