Therefore, my brothers, be all the more eager to make your calling and election sure. For if you do these things, you will never fall, and you will receive a rich welcome into the eternal kingdom of our Lord and Savior Jesus Christ. 2 Peter 1:10-11
How can you know for sure that you are a true believer? How can you know with confidence that you will "receive a rich welcome"? These are key questions and the answers focus on your spiritual growth.
Peter begins his second letter by addressing the need to grow spiritually. God has given us everything we need for spiritual development (1:3-4) and we should "make every effort" to be effective and productive believers by adding essential virtues to our gift of faith (1:5-9). In the passage today, Peter says that we should be diligent to make our salvation certain.
The word "make" is in the middle voice and carries the meaning "make for oneself." Being certain of your salvation is something only you can do. Salvation begins with the gift of faith. So the first question is: Have you trusted in Christ as the One who paid for your sins? The second question is: Are you in the process of adding to your faith the essential Christian virtues? (See 2 Peter 1:5-7). This question does not deal with earning your right to stay in God's family but with evaluating your demonstration of that faith. When we are alive in Christ, there will be signs of these essential virtues.
Father, help us to know that we are Your children by seeing the signs of life that You desire each of us to have. In Jesus' name. Amen.