Since I’ve encountered Josiah making these same arguments for the last 2 years on other forums, permit me to contribute that which I think damns his position against the Catholic Church.
Regarding who “validates” who, I would approach it like this. Who validates the authority of the first Church leaders, the Apostles? When they claim authority are they “validating themselves?” Does their authority come from themselves? We don’t have any letters from Jesus stating Who God commissioned. We have apostles (or their associates) writing down that Jesus gave them authority. Is this circular? I say no.
A study of the early Church reveals coherence in the Resurrection, martyrs attesting to the truths of the faith (such as
Justin Martyr who died for his beliefs in the Real Presence, regenerative quality of baptism, and other ECFs attested consistently to infant baptism, Church hierarchy, liturgical worship, sacramental life, etc…), and the earliest letters of the Church. An important study is of St. Irenaeus who debated with the Gnostics who authentically held apostolic succession (
Against Heresies. 3.3.1-3ff). Note that the debate was NOT whether or not succession existed, but rather who had it. The Gnostics not only clung to a different set of Scripture, but had no known capacity to demonstrate succession. Irenaeus wrote around 170-180. Justin around 150-160. And long before them, Clement explicitly stated around 90 A.D. the following: “Our Apostles knew through our Lord Jesus Christ that there would be strife for the office of bishop. For this reason, therefore, having received perfect foreknowledge, they appointed those who have already been mentioned, and afterwards added the further provision that, if they should die, other approved men should succeed to their ministry.” (Clement,
Letter to the Corinthians , #44). According to multiple antiquated historical accounts of Church history, this Clement is likely the very same Clement referred to as Paul’s “fellow worker” in
Philippians 4:3. (See
Jerome, : Also,
Eusebius, Church History, Book III, Chapter 4, #10) and others.) All of these Church Father’s espousing apostolic succession, a Church hierachy, as well as foundational Catholic dogma, wrote well before the formation of the Canon of the New Testament. We take the truth of the Gospel on the testament of the early Christians and the death’s they welcomed, the miracles they performed—it is these testaments which demonstrate that the commission of the Church is divine. And it is their surviving accounts which demonstrate identification of the true Church as one with a successive line of bishops. In following centuries, other succession accounts can be read that dovetail from Irenaeus’. And so by this, by the doctrines taught in the early Church, by the canon of Scripture that was assembled, the Catholic Church is identified as that same Church given the divine commission.
It is by patterns such as this which we identify God as the one who validates the authority of the Catholic Church. If Josiah were to trust the description of apostolic succession both from Scripture and in the early Church, he would know de facto that the true bishops are
identifiable. His argument completely rests on the notion that we “cannot know” who has true succession or that it doesn’t exist. He appeals to the claims of Mormons or whoever, permitting their claims to blur the reality of history. The problem that Josiah struggles with some 1800 years later had long been solved by Irenaeus writing against the Gnostics. You will notice that neither Clement, nor Irenaeus, nor Augustine, nor Eusebius, nor any other Early Church Father giving an account of successors has a problem identifying authentic bishops the way Josiah does, despite the competing religions of their day. Nor do they encounter challenge that such succession is false.
His argument also completely dissolves his own religion. His hermeneutic of history discredits all strains of Christianity and the Apostles themselves. After all, there are other religions claiming to have the truth, claiming to have divine books, therefore if he applies the same standard to them that he does to the Catholic Church, all religions are self-authenticating. Any true religion would thus be false or unidentifiable. That is the essence of his argument. And it has not changed in at least 2 years despite its own implosive consequences.
And that’s all to not even address the poverty of the sola scriptura norma norms praxis argument…
Carry on…