2 Peter 1:8; 2 Peter 1:10; 2 Peter 1:20-21

2 Peter 1:8

8 For if these qualities are yours and are increasing, they render you neither useless nor unfruitful in the true knowledge of our Lord Jesus Christ.

2 Peter 1:10

10 Therefore, brethren, be all the more diligent to make certain about His calling and choosing you; for as long as you practice these things, you will never stumble;

2 Peter 1:20-21

20 But know this first of all, that no prophecy of Scripture is a matter of one's own interpretation,

21 for no prophecy was ever made by an act of human will, but men moved by the Holy Spirit spoke from God.