Peter clears up all those loose ends at the end of Second Peter, Chapter 3. His words are tied to Paul, when he reminds his readers not to forget what Paul had to say. Interesting that someone who was right beside Jesus for three years would think that the words of someone else said it better.
What both Peter and Paul wanted us to remember was that not everything will be understandable now. And just because they are not understandable (they don't make sense or defy our logic or we just don't agree with them/it), it becomes easy for people to confuse us. [more]Simply because we don't understand the language, or have not studied the Bible enough, we easily fall prey to those false teachers. They stretch and distort the truth and we go along with them.
God reveals Himself to us in many ways. We need to be cautious that we don't get hung up on what we don't understand. When we can't get past verse "A" because it doesn't make sense, we can miss what God has for us in verse "B". Maybe it's possible that when we get to the end of a chapter or book that all of a sudden the meaning of the unclear becomes clear.
The challenge is there in verse 18 – "grow in the grace and knowledge of our Lord…" We can grow, or we can stagnate, but it is our choice.