2nd Book of Peter, chapter 1, verses 5-15.
5 For this very reason, make every effort to supplement your faith with virtue, and virtue with knowledge, 6 and knowledge with self-control, and self-control with steadfastness, and steadfastness with godliness, 7 and godliness with brotherly affection, and brotherly affection with love. 8 For if these qualities are yours and are increasing, they keep you from being ineffective or unfruitful in the knowledge of our Lord Jesus Christ. 9 For whoever lacks these qualities is so nearsighted that he is blind, having forgotten that he was cleansed from his former sins. 10 Therefore, brothers, be all the more diligent to confirm your calling and election, for if you practice these qualities you will never fall. 11 For in this way there will be richly provided for you an entrance into the eternal kingdom of our Lord and Savior Jesus Christ.
12 Therefore I intend always to remind you of these qualities, though you know them and are established in the truth that you have. 13 I think it right, as long as I am in this body, to stir you up by way of reminder, 14 since I know that the putting off of my body will be soon, as our Lord Jesus Christ made clear to me. 15 And I will make every effort so that after my departure you may be able at any time to recall these things.
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After we have believed, we must fortify ourselves with the character qualities befitting a child of God. Otherwise, we remain conformed to the world and its selfish, shameful ways, and we forget who we are in Christ. The world around us is constantly pulling us away from the world above us.
It is not enough to merely fill our schedule with church busy work and regular meetings. You can do those things in a perfunctory way that satisfies the minimal demands of lazy leaders without you becoming a disciple of Jesus Christ. All the while you can still be full of wrath, resentment and greed. You can continue to fortify your life with that which passes away.
Peter offered to continue to hold his readers accountable to the task of building themselves up. He taught them to seek the personal qualities found in Christ, in the knowledge of Him. We must also do that for one another.