This is the custom presented in the Scriptures. Different congregations wrestled with different errors but they weren't considered to be not part of the church on account of those errors. They were treated as fellow Christians and attempts, sometimes multiple attempts, were made at correction even in severe instances when people's salvation was endangered.
The custom presented in the Scriptures is that the apostles were the leaders of the Church. The apostles ordained successors to continue to lead the communities they founded as they founded communities and started dying off. Their successors ordained successors and through the ages. These successors exist today as the bishops in the RCC.
Their unstated premise, which you affirm indirectly below, is that it is incomplete to be the sole rule and norm.
Scripture is complete to serve as the Norm. But Scripture is a divine collection of books that requires a divinely authorized teacher. Scripture is sufficient to serve as a Norm in the proper hands. It is difficult to use Scripture as a Norm if one does not know how to properly use it.
Certainly many things are clear in the Scriptures, such that an individual could use them to refute error, etc. Not all things are clear, however, and this is why we need a divinely authorized teacher in the form of the Church--with clear leaders with clearly defined roles.
That is too ambiguous for me to respond precisely. Do you mind posting which Canon you have in mind as the basis for that assertion.
What is ambiguous about it? ONLY Scripture is infallible. That is one of the essential claims of Sola Scriptura. Tradition can pass on the Gospel, but it is not infallible. The Church teaches the Gospel but is not infallible. Only Scripture is infallible. And this sounds good on paper. The problem with this is that it makes the Faith unstable. It makes the Faith beholden to scholarship. What the Church believes in one period, the Church might not believe in another period because scholarship may come along and say "You know, based on recent discoveries, or based on recent blah, blah, blah, we have found that the Scriptures actually teach X instead of Y."
Note that this is actually happening in many liberal Protestant sects today. "Scholarship" has found that the Church got it wrong, say these liberals, on homosexuality. Now, we disagree of course. The point is that without a divinely authorized teacher, the Scriptures are beholden to the whims of scholarship. The Church is the pillar of Truth; Scriptures are the Truth, the Church upholds them. The Scriptures and the Church are interrelated. To attack the authority of one is to attack the authority of the other. The Protestant reformers didn't realize this, but we are seeing the fruits today of what happens when you dispense with the authority of the Church. Once you do away with the authority of the Church, it isn't long before you do away with the authority of the Scriptures themselves. When the pillar that upholds Scripture falls--the Scriptures fall with it. You need both.
Edited to add: Are you sure this isn't in conflict with your point 2 under what Rome can agree upon below?
Um, yeah, I am.
Agreed, but that is an indirect false claim regarding the lack of perspicuity in the Scriptures regarding the person and work of Christ for all men. When the risen Lord opened the minds of the disciples to understand the Scriptures and what they were to proclaim regarding Him He turned them to the law and the prophets rather than the law and the prophets and an unwritten tradition.
1) The Catholic claim is not "The Scriptures are unintelligible without the Church." The Catholic claim is not "The Scriptures are unclear." The Catholic claim is that the Scriptures are a divine collection of books that require a divinely authorized teacher. 2) Not everything in the Scriptures are as clear as we might like them to be. For example: Scripture does not clearly condemn abortion. Granted, I believe it is implied in "Thou shall not kill" but in order to believe that--you have to believe a human being beings at conception. Where does Scripture clearly teach that human persons, human life begins at conception? That is just one example. There is much in the Scriptures that are clear--but there is also things that aren't clear. That is a fact.
The Gospel is by definition objective true good news to and for all men. That means any witness which is contrary to, misrepresents, distorts, or seeks to supplement that objective true good news is by definition not the Gospel.
Agreed. The problem isn't that we disagree here. The problem is that we disagree on what "The Gospel" is.
For Protestants, the essence of the Gospel, the heart of the Gospel is Justification by Faith alone. Many Protestants claim that Catholics are not Christian because they do not believe Justification by Faith alone. Protestants even delimit the Scriptures based on Justification by Faith alone. In other words--for some Protestants, that which is Theopneustos teaches in some form Justification by Faith Alone. If it does not in some form teach Justification by Faith Alone, it isn't by definition, Theopneustos. Justification by Faith Alone is like a Gospel within a Gospel. The book of Romans for many Protestants is like a Bible within a Bible.
For Catholics, the heart of the Gospel, the essence of the Gospel is the Incarnation of God. This is why we have a sacramental system, devotion to the saints, intercession of the saints, and basically everything that makes the Catholic Church Catholic.
it would be helpful if you fleshed out this idea. If what you write is true then the RCC believes that only Scripture is infallible with regard to the person and work of Christ for all men. Otherwise, Papal infallibility rests on something other and less than what is God breathed.
Ah! Now we are getting somewhere!
The problem is that Protestants conflate the charism of inspiration with the charism of infallibility. Inspiration is a greater gift, infallibility a lesser gift. God inspired the authors of Scripture in such a way as God is actually the author of Scripture. By definition, God cannot lie and God cannot err. Thus, infallibility flows from the fact of inspiration.
However, the Church is the pillar and bulwark of Truth. Church definitions are not inspired, but they are infallible. God graces the Church with the gift of infallibility in order for it to be the pillar and bulwark of Truth. The Church is guided by the Holy Spirit and this ensures that what the Church teaches is true. Something need not be inspired in order for it to be true.
Think of it like this: RC Sproul says that the Canon of Scripture is a fallible collection of infallible books. The statement is apparently self refuting until you understand what I think he means by it. Sproul essentially believes that the process that lead to the Church clarifying and recognizing the Canon was flawed and thus fallible. However, because of the guidance of the Holy Spirit, the outcome of the flawed fallible process is guaranteed: the Canon itself is infallible.
Now, extend this logic to everything the Church teaches. The process the Church uses to reach solemn definitions whether by pope or council are flawed and fallible. The arguments used in order to reach the definitions are flawed and fallible. The result, however is infallible--because the Church is guided by the Holy Spirit.
This helps us to also understand the difference between inspiration and infallibility: when something is inspired, both the process and the result are infallible. When something is infallible, only the result is guaranteed. The process used to reach the result is not guaranteed. Hence, to say that the Scriptures are inspired and infallible, we are saying that the process in which the Scripters were penned---was itself infallible as was the result. When we say that the Church is infallible but not inspired, we are saying that the process by which the Church uses to reach an end result is fallible and flawed, the result itself, however is infallible because God is guides the Church.
This looks incomplete and false since according to Trent it can only be rightly understood or normed by the interpretation of the Papal mother church.
Correct; but the Church herself is not above the Scriptures. The Church herself, however, is above the individual when it comes to teaching the Scriptures. The Church is a lesser authority than the Scriptures, but a greater authority than the individual. Thus when we speak of the Rule of Faith we make a distinction between the Proximate Rule of Faith and the Remote Rule of Faith. For the individual, the Church is the Proximate Rule of Faith while the Scriptures are the Remote Rule of Faith. For the Church universal, the Scriptures are the Proximate Rule of Faith because the Church draws on the Scriptures for her teaching. Tradition is the living embodiment of the Scriptures in the person of the Church considered at the universal level. This is why the pope when he defined the Assumption of Mary appealed to the Faith of the Church as evidence that the doctrine is revealed.
I will end it there since I have written quite a lot.