Protestant theology defends all things written in the law and the prophets (sola scriptura) no oral traditions of men as the things of men .It is the reforming authority in any generation .Its what the Catholic must resist with all their heart soul and might so that they can seek the approval of men seen, rather than the Holy Spirit not seen.
Its not agreeing or disagreeing with the private interpretation of men(Catholic or Protestant) . Every man or denomination called a sect, a word that comes from the word heresy has a opinion what they think God's interpretation the Bible to us is saying.
But those who would add another source as those who go above that which is written (sola scriptura) hate all thongs written in the law and the prophets .It shows them as another Christ, another gospel which is not really good news at all. To a Catholic the skies the limit and even if proven wrong Mother Mary is happy the air ways remain open to add to their false authority by their oral tradition, as commandments of men that do make the word of God without effect. Christ called them a brood of vipers for a reason
That above as a law of the Catholic fathers is just like the private revelation defined by Pope Urban below. They both attempt to make the word of God(sola scriptura) to no effect so that they can Lord it over the faith of other. Faith does not come by hearing men as if they were in the place of the promised Holy Spirit.
"www.medjugorje.org/purban.htm
Pope Urban VIII on Private Revelation. His Holiness, Pope Urban VIII stated: "In cases which concern private revelations, it is better to believe than not to believe, for, if you believe, and it is proven true, you will be happy that you have believed, because our Holy Mother asked it."
I'd like to address your final point first. You provided a quote on "private revelation" from a web site that claims it was made by Pope Urban. But as I've pointed out to you previously, that quote doesn't exist anywhere in the Vatican Archives. I also provided you with a link to the Vatican Archives so you could read for yourself what Urban actually said. The quotes exists only on that web site. In other words, the quote is false. That means it is fake, fabricated, not true, bogus. Stop using false quotes to support your assertions. They don't. They only make your conclusions even more incorrect. Do some research. Don't just copy and paste from the first site that says what you want said.
Just in case you think I might try to put a "Catholic" spin on sola scriptura, I am going to cite the writings of David Larson, who teaches in the School of Religion at the Seventh-Day Adventist Loma Linda University. I'm sure even you must acknowledge that a theology school at an educational institution run by the Seventh-Day Adventists could not be further from Catholic ideology.
Larson says the following about Sola Scriptura:
"If we take the words literally, the doctrine of “sola scriptura” is problematic. The Latin word “sola” means “only,” “scriptura” means “scripture,” and so together they mean “only scripture.” In some circles this expression has come to mean that we Christians should consider nothing but the Old and New Testaments when determining what to believe and how to behave. This is not helpful. Neither is it what the Protestant Reformers who promoted this doctrine in sixteenth century Europe had in mind.
For people like Martin Luther and John Calvin “sola scriptura” had a focused meaning. This was that the Roman Catholic teaching that the ultimate authorities for Christians are scripture and tradition is mistaken. Christians have only one supreme authority and it is scripture, they held. For them the doctrine of “sola scriptura” was more like a single bullet that sped toward a specific target than the spraying projectiles of a shotgun it has sometimes now become.
But even this is not exact enough. ... As evidenced by the effective use the Reformers made of the writings of others, for them “sola scriptura” did not mean that we should consider and give weight to nothing else. They were among the best educated people of their day! This is why it seems clearer in our time to convey their meaning by using the expression
prima scriptura. The unique role of scripture resides in its overriding priority, not in its supposed exclusiveness.
An exclusivist understanding of the role of scripture is not helpful for a number of reasons. One of these is that none of us can read scripture without being influenced by the circumstances in which we live. Another is that without studying other forms of contemporary knowledge, as well as the whole of scripture, it can be difficult to know how to apply what it says. Still further, the doctrine of “sola scriptura” makes it difficult for denominations to make effective use of the views of their pioneers, be they John Hus, Martin Luther, John Calvin, Thomas Cramner, Count Nicholas Ludwig von Zinzendorf, John Wesley, or Ellen White. A fourth problem is that this doctrine makes it less likely that Christians will learn from religions other than their own. A fifth is that viewing scripture this way can needlessly make Christians appear dogmatic and obscurant.
Applying scripture to our lives is related to but different from reconstructing as accurately as possible what its various passages first meant, something that non-Christian historians and linguists can do equally well. For them the Bible is a cultural classic; however, for those of us who are Christians it is the primary religious canon, too."
Most Reformers had been instructed by humanists and used their methods. They insisted on a scholarly approach and intellectual integrity for interpreting the Bible in a sermon. Calvin called for the use of dictionaries, grammar books, the commentaries which already existed, and he also advocated that texts should be studied in their original language. [I tried my best to do that at university, but I found I had a great deal of difficulty trying to read the ancient Greek, Hebrew, Aramaic, and Latin of available texts. Now, I use the KJV and scholarly works by respected theologians when an issue of a translation from the original language arises.] He urged people to read the Scriptures using their faith and their intellect.
Calvin thought that the Bible could only be understood when placed in context: the Holy Spirit inspired the authors, but was constrained by human knowledge at the time. So it was important that the Bible reader should be aware of the background and the age in which these texts were written.
Scholarly works by respected theologians are an aid to understanding the richness of the Bible. But at no time should they ever be elevated to having equal status with Scripture.
On a side note, I've found that people who insist on the literalism of the Bible and sola scriptura are often among the first to cite the Book of Revelation as evidence that the Catholic Church is the "Whore of Babylon" and the Pope is the anit-Christ. They fail to recognize that their very interpretation of Revelation goes against the directive of sola scriptura. They are employing a conspiracy theory interpretation to fit the Catholic Church into the narrative of Revelation.