Exactly. Private interpretations are the problem,
And please tell us just how the RC proof text, 2 Peter 1:20,21, refers to personally interpreting what is written, vs. leaving that up to the church?
fostered by the doctrine of Sola Scriptura, evidenced by the divergency of beliefs based on the bible alone.
By that measure, since under your alternative, Sola Roma, in which the church provides all the sure Truth of God, evidences the divergency of beliefs based on what "The Church" alone teaches (depending on what century) then that model for ascertaining what is of God is also invalid. The Watchtower cult shows more unity than Catholicism, in which there is
division ever on what tradition teaches .
Rather than the mighty magisterium being the perfect answer to division, she actually has caused more. As one poster wryly reported,
The last time the church imposed its judgment in an authoritative manner on "areas of legitimate disagreement," the conservative Catholics became the Sedevacantists and the Society of St. Pius X, the moderate Catholics became the conservatives, the liberal Catholics became the moderates, and the folks who were excommunicated, silenced, refused Catholic burial, etc. became the liberals. The event that brought this shift was Vatican II; conservatives then couldn't handle having to actually obey the church on matters they were uncomfortable with, so they left. — Nathan, Against The Grain
Best to listen to the earthly entity that God established for that purpose, of receiving, preserving, and proclaiming the gospel: His church.
Certainly
"It belongs to synods and councils, ministerially to determine controversies of faith, and cases of conscience; to set down rules and directions for the better ordering of the public worship of God, and government of his Church; to receive complaints in cases of maladministration, and authoritatively to determine the same; which decrees and determinations, if consonant to the Word of God, are to be received with reverence and submission.." (the Westminster Confession - a major historical document on SS)
However, the church itself did not begin with souls heeding all the judgments of the historical magisterium, but with common souls rightly ascertaining who and what was of God, and thus following some itinerant preachers and their itinerant Lord versus those who did sit in the seat of Moses.
Thus the NT church did not begin consistent with the Cath. model for ascertaining what is of God, as for a RC the novel and unScriptural premise of ensured perpetual magisterial infallibility is to be the basis for their assurance of what is of God.
Thus,
"...the mere fact that the Church teaches the doctrine of the Assumption as definitely true is a guarantee that it is true." - Karl Keating, founder of Catholic Answers; Catholicism and Fundamentalism San Francisco: Ignatius, 1988, p. 275),
Philip was of that group of disciples who made up the early church. He was able to expound on the meaning of Scripture, the Old Testament, while the Eunuch was at pains to understand without that informed input.
Which is what evangelicals do, expounding on the meaning of Scripture to such as to the seeking eunuch, preaching Christ, not a church as RCs mainly do.
Then Philip opened his mouth, and began at the same scripture, and preached unto him Jesus. (Acts 8:35)
Meanwhile, contrary to you, even the veracity of the apostle's preaching was subject to examination by Scripture, as all preaching is to be.
These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so. (Acts 17:11)
For as is
abundantly evidenced , as written, Scripture became the transcendent supreme standard for obedience and testing and establishing truth claims as the wholly Divinely inspired and assured, Word of God.
What is the basis for your assurance of truth? That an assuredly (if conditionally) infallible magisterium is essential for determination and assurance of Truth (including writings and men being of God) and to fulfill promises of Divine presence, providence of Truth, and preservation of faith, and authority?
And that being the historical instruments and stewards of Divine revelation (oral and written) means that Rome is that assuredly infallible magisterium. Thus any who knowingly dissent from the latter must be in rebellion to God?