[quote=EA_Man]I’ll include the preceding and following verses to provide some context.
2 Peter 3:15-17
Bear in mind that our Lord’s patience means salvation, just as our dear brother Paul also wrote you with the wisdom that God gave him. He writes the same way in all his letters, speaking in them of these matters. His letters contain some things that are hard to understand, which ignorant and unstable people distort, as they do the other Scriptures, to their own destruction.
Therefore, dear friends, since you already know this, be on your guard so that you may not be carried away by the error of lawless men and fall from your secure position.
Peter is warning Believers to be on their guard against error from UNbelievers, not that they (Believers) can’t understand scripture.
It seems that Peter is acknowledging the fact his the readers of his letter read scripture. In fact he even acknowledges that Un-Believers do so.
Further, this seems like a logical place to tell Believers “just do what I tell or told you to do, don’t try to interpret scripture by yourself”. But Peter doesn’t do that. No anathemas against personal interpretation, just an exhortation to “be on your guard”.
"we do not write you anything you cannot read or understand"
2 Corinthians 1:13
First…your interpretation of 2 Peter 3:15-17 is a little misleading. The Greek word for ignorant is not the same as ours…it literally means unlearned. Peter is saying there are unlearned people reading the Scriptures who misinterpret it. How did one become “learned?” Through the Apostles teachings…a.k.a. Traditions. When someone learns from the Apostles, they can then approach Scriptures and understand what the author meant. Peter was not necessarily speaking of non-believers however.
As for your opinion that this was an appropriate spot to debunk sola Scriptura, or at least assert the authoritative Magisterium, the argument just doesn’t follow. Scripture’s weren’t even complete then for one thing…therefore Bible alone would have left out Revelation and other books we believe are necessary for salvation. Second, they were readily teaching everyone. It should be assumed that if someone is teaching…they are probably hoping that the audience is listening and learning. The very writing of this letter asserts a form of an interpretive and authoritative Magisterium. In fact this portion of the letter Peter writes to them was meant to help them with the Scriptures…well Peter’s very letter became Scripture!
Was he originally writing it to include in the New Testament canon…or did he think he was giving them extra-biblical help in understanding the Bible? I think the latter is the most reasonable. Again…no Church I can think of says don’t interpret Scripture on your own…especially not the Catholic Church. Peter clearly understands that they need to be reading Scripture, and that it is his job to teach its appropriate meaning and message. There is only one Church that claims to maintain the same Apostolic Tradition to help the same believers properly interpret the Bible, and this was Peter’s intent as well…making “unlearned” people learned.