It is scarcely possible to exaggerate the importance of the testimony which the Ignatian letters offer to the dogmatic character of Apostolic
Christianity. The martyred Bishop of Antioch constitutes a most important link between the Apostles and the Fathers of the early Church. Receiving from the Apostles themselves, whose auditor he was, not only the substance of revelation, but also their own inspired interpretation of it; dwelling, as it were, at the very fountain-head of Gospel truth, his testimony must necessarily carry with it the greatest weight and demand the most serious consideration. Cardinal Newman did not exaggerate the matter when he said (“The Theology of the Seven Epistles of St. Ignatius”, in “Historical Sketches”, I, London, 1890) that “the whole system of Catholic doctrine may be discovered, at least in outline, not to say in parts filled up, in the course of his seven epistles”. Among the many Catholic doctrines to be found in the letters are the following: the Church was Divinely established as a visible society, the salvation of souls is its end, and those who separate themselves from it cut themselves off from
God (Philad., c. iii); the hierarchy of the Church was instituted by Christ (lntrod. to Philad.; Ephes., c. vi); the threefold character of the hierarchy (Magn., c. vi); the order of the episcopacy superior by Divine authority to that of the priesthood (Magn., c. vi, c. xiii; Smyrn., c. viii;. Trall., .c. iii);the unity of the Church (Trall., c. vi;Philad., c. iii; Magn., c. xiii);the holiness of the Church (Smyrn., Ephes., Magn., Trall., and Rom.); the catholicity of the Church (Smyrn., c. viii); the
infallibility of the Church (Philad., c. iii; Ephes., cc. xvi, xvii); the doctrine of the Eucharist (Smyrn., c. viii), which word we find for the first time applied to the Blessed Sacrament, just as in Smyrn., viii, we meet for the first time the phrase “Catholic Church”, used to designate all
Christians; the Incarnation (Ephes., c. xviii); the supernatural virtue of virginity, already much esteemed and made the subject of a vow (Polyc., c. v); the religious character of matrimony (Polyc., c. v); the value of united prayer (Ephes., c. xiii); the primacy of the See of Rome (Rom., introd.). He, moreover, denounces in principle the
Protestant doctrine of private judgment in matters’ of religion (Philad. c. iii), The heresy against which he chiefly inveighs is Docetism. Neither do the Judaizing heresies escape his vigorous condemnation.