"Thanks to the charisma of inspiration", the Benedict XVI goes on, "the books of Sacred Scripture have a direct and tangible appeal. Yet the Word of God is not confined to writing, for although the Revelation ended with the death of the last Apostle, the revealed Word has continued to be announced and interpreted by the living Tradition of the Church. Thus the Word of God, fixed in the holy texts, is not an inert matter at the heart of the Church but the supreme rule of her faith and her life force. The Tradition she draws from the Apostles advances with the assistance of the Holy Spirit, and grows through reflection and study on the part of believers, through the individual experience of spiritual life and the preaching of bishops".First, note the denial that the Word of God has been confined to writing while acknowledging that Revelation ended with the death of the last apostle. Hopefully you've seen this Roman claim elsewhere. But where else is the Word of God to be found?
Hence the need for deeper study on the theme of inspiration and truth in the Bible, because it is "fundamental for the life and mission of the Church that Sacred Scripture be interpreted according to its nature; and inspiration and truth are constituent characteristics of that nature".
Benedict XVI refers to the "Tradition she draws from the Apostles," but the only tradition that is traceable to the apostles is Scripture. There is not a body of extra-scriptural tradition that can be reliably alleged to be apostolic. I do not mean to suggest that only us Christians lack that tradition. Even within the Vatican there is no access to earlier tradition. The Vatican Secret Archives don't contain notes from the Apostle Paul that are not in Scripture. The cardinals don't get together every year and hand on oral tradition from mouth to ear to the next generation of cardinals. In general, they have what we have.
Benedict XVI went on to claim that the apostolic tradition, "advances with the assistance of the Holy Spirit, and grows through reflection and study on the part of believers, through the individual experience of spiritual life and the preaching of bishops." This is clearly wrong. What the Holy Spirit does is to preserve Revelation and to open the eyes of men to it. The Revelation is itself a fixed quantum. It does not grow, even if believers' understanding of it grows. The Holy Spirit has given believers great understanding over the ages, but that understanding is not itself Revelation, or a growth or advancement of the Revelation.
It is interesting to see Benedict XVI claim that "the Word of God, fixed in the holy texts, is not an inert matter at the heart of the Church but the supreme rule of her faith and her life force." That is true of Christians, where "the Word of God" refers to the Scriptures. It's not really true that the Word of God is the supreme rule of faith for those in the Roman communion, however.
For those in the Roman communion, the magisterium's dogmatic proclamations are the supreme rule of faith. If one finds any discrepancy between the dogmatic proclamations of Rome and the Scriptures, one is to simply accept what Rome has dogmatically proclaimed. But Rome's dogmatic proclamations are not the Word of God. Therefore, it follows that Rome's supreme rule of faith is not the Word of God, but the word of the magisterium.
Benedict XVI goes on to say that it is "fundamental for the life and mission of the Church that Sacred Scripture be interpreted according to its nature ... ." But isn't it remarkable that Rome has found so few occasions for exercising its alleged gift of infallible interpretation of Scripture. How many verses have been infallibly interpreted? People have attempted to make lists, but the lists all tend to show the same result: not many. No whole chapters, and obviously no whole books.
Moreover, the few verses that have been interpreted in connection with allegedly infallible papal decrees have been wrongly interpreted (Genesis 3:15 is the most obvious example), so that defenders of papal infallibility have been forced to qualify the alleged gift to simply limit it to the definition of dogma itself, without regard to the interpretation on which it was actually founded.