Eusebius is the only Eastern writer of the early centuries to mention Theophilus and his writings. Among the Latin Fathers, Lactantius and Gennadius refer to his work, ad Autolycum; and Jerome devotes chap. 25 of his de vir. ill. to him. Beyond this there is no direct mention of Theophilus, or of his works, during the early centuries (except that of Malalas, which will be referred to below). Eusebius here calls Theophilus bishop of Antioch, and in chap. 20 makes him the sixth bishop, as does also Jerome in his de vir. ill. chap. 25. But in his epistle, ad Algas.
(Migne, Ep. 121), Jerome calls him the seventh bishop of Antioch, beginning his reckoning with the apostle Peter. Eusebius, in his Chron. , puts the accession of Theophilus into the ninth year of Marcus Aurelius (169); and this may be at least approximately correct. The accession of his successor Maximus is put into the seventeenth year (177); but this date is at least four years too early, for his work, ad Autolycum, quotes from a work in which the death of Marcus Aurelius (who died in 180) was mentioned, and hence cannot have been written before 181 or 182. We know that his successor, Maximus, became bishop sometime between 189 and 192, and hence Theophilus died between 181 and that time.
We have only Eusebius’ words (Jerome simply repeats Eusebius’ statement) for the fact that Theophilus was bishop of Antioch (his extant works do not mention the fact, nor do those who quote from his writings), but there is no good ground for doubting the truth of the report. We know nothing more about his life. In addition to the works mentioned in this chapter, Jerome ( de vir. ill. ) refers to Commentaries upon the Gospel and the book of Proverbs, in the following words: Legi sub nomine ejus in Evangelium et in Proverbia Salomonis Commentarios qui mihi cum superiorum voluminum elegantia et phrasi non videntur congruere.
The commentary upon the Gospel is referred to by Jerome again in the preface to his own commentary on Matthew; and in his epistle, ad Algasiam, he speaks of a harmony of the four Gospels, by Theophilus ( qui quatuor Evangelistarum in unum opus dicta compingens ), which may have been identical with the commentary, or may have formed a basis for it. This commentary is mentioned by none of the Fathers before or after Jerome; and Jerome himself expresses doubts as to its genuineness, or at least he does not think that its style compares with that of the other works ascribed to Theophilus.
Whether the commentary was genuine or not we have no means of deciding, for it is no longer extant. There is in existence a Latin commentary on the Gospels in four books, which bears the name of Theophilus, and is published in Otto’s Corpus Apol. Vol. VIII. p. 278–324. This was universally regarded as a spurious work until Zahn, in 1883 (in his Forschungen zur Gesch. des N. T. Canons, Theil II.) made an elaborate effort to prove it a genuine work of Theophilus of Antioch. Harnack, however, in his Texte und Unters.
I. 4, p. 97–175, has shown conclusively that Zahn is mistaken, and that the extant commentary is nothing better than a Post-Nicene compilation from the works of various Latin Fathers. Zahn, in his reply to Harnack ( Forschungen, Theil III. Beilage 3), still maintains that the Commentary is a genuine work of Theophilus, with large interpolations, but there is no adequate ground for such a theory; and it has found few, if any, supporters. We must conclude, then, that if Theophilus did write such a commentary, it is no longer extant.
The three books addressed to Autolycus (a heathen friend otherwise unknown to us) are still extant in three Mediæval mss. and have been frequently published both in the original and in translation. The best edition of the original is that of Otto ( Corp. Apol. Vol. VIII.); English translation by Dods, in the Ante-Nicene Fathers, Vol. II. p. 85–121. The work is an apology, designed to exhibit the falsehood of idolatry and the truth of Christianity. The author was a learned writer, well acquainted with Greek philosophy; and his literary style is of a high order.
He acknowledges no good in the Greek philosophers, except what they have taken from the Old Testament writers. The genuineness of the work has been attacked, but without sufficient reason. From Book II. chap. 30 of his ad Autol. we learn that Theophilus had written also a work On History. No such work is extant, nor is it mentioned by Eusebius or any other Father. Malalas, however, cites a number of times “The chronologist Theophilus,” and it is possible that he used this lost historical work. It is possible, on the other hand, that he refers to some other unknown Theophilus (see Harnack, Texte und Unters. I. 1, p. 291).