“The Gnostic appeal to a secret tradition embodied in its own Gospels or modifications of the existing Christian gospels thus highlights the situation of the “Two Churches within One Institution” Model, for the Gnostic “tradition” is esoteric, and can only be arrived at by initiation into methods known to the Gnostic. The situation is all too similar to the claims of much modern textual criticism, which asserts the right of its own scholarly elite to modify the text of Scripture, or in actual fact, to reject the ecclesiastical texts, in favor of its own highly questionable conjectures and reconstructions of the “original autographs”. Seen in this light, the Gnostic is little more than a second century textual critical peritus, and the modern textual critic as little more than a nineteenth or twentieth century Gnostic.”
…
“Specifically, by the latter part of the second century, when the orthodox insisted upon “one God,” they simultaneously validated the system of governance in which the church is ruled by “one bishop.” Gnostic modification of monotheism was taken—and perhaps intended—as an attack upon that system. For when gnostic and orthodox Christians discussed the nature of God, they were at the same time debating the issue of spiritual authority. Thus, even the idea of apostolic succession is transformed in the hands of some Gnostic systems who claimed succession from different teachers, who form, according to Ptolemy, “an esoteric supplement to the canonical collection of Jesus’ words.” Bodily resurrection, apostolic succession, and the canonical and textual form of the Scriptures form a continuous strand of orthodox response to Gnosticism, as Gnosticism forms a continuous and total program of assault on each of these. For both the Gnostic and the Orthodox, to imperial any of these elements was to imperial them all. Again, the implications for the modern situation are dire, for faced as we are with Churches and hierarchies that all too quickly are abandoning versions of Scripture based upon some form of the Majority Text—the received ecclesiastical text underlying most versions of Scripture, in favor of versions based on critical constructions of what scholars think the early text to have been, constructions themselves based upon manuscripts in many cases of known Gnostic or heretic pedigree, the implication for apostolic succession is enormous.”
…
“[W]hen St. Irenaeus emphasizes the recapitulation of all things in Christ, including all stages of human nature, he is stating more than just Christological doctrine. The unity of the Godhead and the inclusion of all of humanity in the effects of the Incarnation are double blows against the Gnostic proliferation of deities and authorities; his understanding of recapitulation is also a statement of ecclesiastical polity. There are, indeed, he acknowledges, two traditions, but only one derives from the Apostles; the other derives from Simon Magus and ultimately from Satan. The importance of this will be lost unless restated in modern higher critical terms: the distinction of two kinds of tradition as regards doctrine, polity, and canonical Scripture means that any attempt to deal with early manuscripts of Scripture as an indistinct mass, without regarde to doctrinal content, is, from the orthodox Christian perspective, impossible, since it does not account for the historical fact of the existence of different kinds of tradition from the beginning.”
-God, History, and Dialectic: The Theological Foundations of the Two Europes and Their Cultural Consequences, +Photius Farrell