2 Peter 1:8-15

The more you grow like this, the more productive and useful you will be in your knowledge of our Lord Jesus Christ. But those who fail to develop in this way are shortsighted or blind, forgetting that they have been cleansed from their old sins. So, dear brothers and sisters, work hard to prove that you really are among those God has called and chosen. Do these things, and you will never fall away. Then God will give you a grand entrance into the eternal Kingdom of our Lord and Savior Jesus Christ. Therefore, I will always remind you about these things—even though you already know them and are standing firm in the truth you have been taught. And it is only right that I should keep on reminding you as long as I live. For our Lord Jesus Christ has shown me that I must soon leave this earthly life, so I will work hard to make sure you always remember these things after I am gone.