If we want to continue to mature in our christian lives, we are to measure our progress daily with God’s righteousness. In the book of 2 Peter, Peter differentiated spiritual Christians from carnal Christians by the way they continued to develop the qualities in their lives ( 2 Peter 51:5-7)
5 For this very reason, make every effort to add to your faith goodness; and to goodness, knowledge; 6 and to knowledge, self-control; and to self-control, perseverance; and to perseverance, godliness; 7 and to godliness, mutual affection; and to mutual affection, love.
Carnal or unspirited Christians forget God’s mercy and grace in saving them. Peter described them as “blind and sort sited”, leaving them “useless and unfruitful”, not growing, “in the knowledge of the our Lord.”
8 For if you possess these qualities in increasing measure, they will keep you from being ineffective and unproductive in your knowledge of our Lord Jesus Christ. 9 But whoever does not have them is nearsighted and blind, forgetting that they have been cleansed from their past sins.
To keep this from happening Peter reminded these believers of what they already knew 2 Peter 1-12
12 For this reason I will not be negligent to remind you always of these things, though you know and are established in the present truth.
Peter was reminding all of us that we are to become more and more like Jesus Christ individually and corporately. For this to happen we must draw on God’s power as we make every effort to live up to God’s standard of righteousness.