Vs. 13, “I think it is right to refresh your memory as long as I live in the tent of this body.” Peter knew that the recipients of his letter needed an encouraging reminder of their faith. Rather than jump straight to addressing the false teaching issue, Peter takes sometime to acknowledge the faith that got them there in the first place (vs. 3-11). The Lord gives us every tool we need from His workshop to accomplish whatever He desires us to build. As we grow in our faith, we grow in increasing measure this wonderful list of characteristics of a believer (vs. 5-7). Peter knew that his time on earth was about to end (vs. 12-15), so that is why see this sense of urgency. Unlike the false teachers who were growing in abundance, Peter was an eyewitness of Christ (vs. 16-18). Through the Holy Spirit, God chose select people to administer this message of hope (vs. 19-21)
Regarding application…Assurance of Salvation. Vs. 10, “Therefore, my brothers and sisters, make every effort to confirm your calling and election. For if you do these things, you will never stumble.” Earlier, Peter reminded us in his first letter of the blessed hope that our inheritance will never spoil or fade (I Peter 1:3-5). As we grow in our knowledge of our Lord Jesus Christ, our own assurance of salvation will grow. Our salvation was sealed when we put our trust in the Lord. However, our emotions at times can betray us and that is why the more we know the Lord and grow, the more our confidence will soar. My early years of faith certainly had moments of doubt. However, the common denominator of those doubts were because I was not growing. We are going to doubt and lack faith at times, but know that the salvation is achieved not by our own doing, but because of Jesus on the cross!