Indeed, I looked at all of those things. But the context in which that verse appears (the right block on the link provided) is operative to understanding and therefore, my reading of it.
The Second Letter of Peter was a letter, and it did not logically stop at the end of a chapter. If you continue with "Chapter Two - Verse 1" of that letter, you see that the very next sentence Peter writes in that letter is about false teachers, trying to get people to agree with their own (private) false interpretations of what Peter had been talking about, and Peter goes on to counsel them to not listen to those false teachers (and, by implication, their "private", erroneous interpretations of prophecy and teachings), but to listen rather to the Church leaders (like Peter himself) who continued to instruct them in the correct interpretation of the prophecies and teachings.
That is the broader, and more useful context to read those texts in, as I see it.
(With that, I have to say good night to you, as I have to get up pretty early. God bless you, Alamo-Girl.)