ὁ ἐπιγεγραμμένος κανὼν ἐκκλησιαστικὸς, ἢ πρὸς τοὺς ᾽Ιουδαϊζόντας. Jerome: de canonibus ecclesiasticis, et adversum eos, qui Judæorum sequuntur errorum. Photius mentions the work; calling it περὶ κανόνων ἐκκλησιαστικῶν, but he had not himself seen it. It is no longer extant, but a few fragments have been preserved, and are given by Potter. Danz (De Eusebio, p. 90) refers to Clement’s Stromata, lib. VI. p. 803, ed. Potter, where he says that “the ecclesiastical canon is the agreement or disagreement of the law and the prophets with the testament given at the coming of Christ.” Danz concludes accordingly that in this work Clement wished to show to those who believed that the teaching of the law and the prophets was not only different from, but superior to the teachings of the Christian faith,—that is, to the Judaizers,—that the writers of the Old and New Testaments were in full harmony. This might do, were it not for the fact that the work is directed not against Jews, but against Judaizers, i.e. Judaizing Christians. A work to prove the Old and New Testament in harmony with each other could hardly have been addressed to such persons, who must have believed them in harmony before they became Christians. The truth is, the phrase κανὼν ἐκκλησιαστικός is used by the Fathers with a great variety of meanings, and the fact that Clement used it in one sense in one of his works by no means proves that he always used it in the same sense. It is more probable that the work was devoted to a discussion of certain practices or modes of living in which the Judaizers differed from the rest of the Church Catholic, perhaps in respect to feasts (might a reference to the Quartodeciman practice have been perhaps included?), fasts and other ascetic practices, observance of the Jewish Sabbaths, &c. This use of the word in the sense of regula was very common (see Suicer’s Thesaurus). The work was dedicated, according to Eusebius, to the bishop Alexander, mentioned above in chap. 8 and elsewhere. This is sufficient evidence that it was written considerably later than the three great works already referred to. Alexander was a student of Clement’s; and since he was likewise a fellow-pupil of Origen’s (see chap. 8, note 6), his student days under Clement must have extended at least nearly to the time when Clement left Alexandria (i.e. in or before 202. a.d.). But Clement of course cannot have dedicated a work to him while he was still his pupil, and in fact we shall be safe in saying that Alexander must have gained some prominence before Clement would be led to dedicate a work to him. We think naturally of the period which Clement spent with him while he was in prison and before he became bishop of Jerusalem (see chap. 11). It is quite possible that Clement’s residence in Cappadocia with Alexander had given him such an acquaintance with Judaizing heresies and practices that he felt constrained to write against them, and at the same time had given him such an affection for Alexander that he dedicated his work to him.