Since you won't do the exegesis of these scriptures taking into consideration the whole counsel of God on the subject, I will do it for you.
Who is Peter writing to? The beloved. Why is he saying what he is saying? To "stirring up your sincere mind by way of reminder, that you should rememer the predictions of the holy prophets and the commandment of the Lord and Savior through your apostles, knowing this first of all, that scoffers---"
Read the rest for yourself, verses 3-7 if you think it is important, and it is important to figuring out what verse 9 is and is not saying. But it is speaking of the coming judgement of the ungodly. In verses 8-10 Peter is warning them to not become complacent in their faith as they wait for His return. It is in verse 9 that he says, The Lord is not slow to fulfill His promise as some count slowness, but is patient toward you, not wishing that an should perish, but that all should reach repentance." Who are the you and by extension the all?
Considering that in the next sentence he says, "Since all these things are thus to be dissolved, what sort of people ought you to be in lives of holiness and godliness waiting for and hastening the coming of the day of God--"
If we take into account the many other scriptures that tell us God always accomplishes what He intends to accomplish, that He elects, chooses, predestines, calls, glorifies, conforms to the image of Christ. Those stating that He gives specific people to Christ and those are the ones Christ redeems on the cross, how can one single scripture mean something different than that. And I have given you many of those scriptures, exegeted them, they were never addressed in a way of refuting them by the same method, and will be again, I will not go through the so as to shorten the post. We now have the internet so the tediousness of checking all of the scriptures on any given topic are right at our fingertips so we can examine them in their context. But even with all the heavy labor taken out of the process because those of long ago have done it, people still feel no obligation to go to all the labor of typing a few words and pushing buttons. But that too is our duty if we desire truth and desire to grow in our knowledge and understanding of those things God has given us.