The Apostle Peter gives us great insight in his second Epistle, 10 Therefore, brothers, be all the more diligent to confirm your calling and election.
Peter shows us we are part of the process (Election) but it's our job to confirm being Elect.
All God's elect are products of his grace. However, as I proved the other day, the because the hearts of men are so utterly deceitful, there are many such exhortations in the scripture which serve as an acid test for the genuineness of the saints' faith. Spurious faith runs rampant in the Church (see my 5168). (And no one would know this better than Peter, would they!? After all, he "departed" from the faith for a very short season, didn't he? So, if anyone knew the difference genuine faith and the spurious kind, it would be him.)
So, Peter give his audience a spiritual checklist and exhorts them to take a spiritual inventory of themselves.
But before he gives the inventory checklist, he said this about God:
2 Peter 1:3-4
3 His divine power has given us everything we need for life and godliness through our knowledge of him who called us by his own glory and goodness. 4 Through these he has given us his very great and precious promises, so that through them you may participate in the divine nature and escape the corruption in the world caused by evil desires.
NIV
In other words, by his divine GRACE he has given us everything we need. And when was this grace given? It was predestined to be given to us in eternity. And I don't believe any of us were around in eternity to be part of the election process.
What follows next is the checklist:
2 Peter 1:5-9
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, brotherly kindness; and to brotherly kindness, love. 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 if anyone does not have them, he is nearsighted and blind, and has forgotten that he has been cleansed from his past sins.
NIV
In other words, IF God has actually given to us EVERYTHING we need for life and godliness...then our [new] hearts will move us, incline us, cause us to grow in faith by adding the qualities listed. But if anyone does not posssess those qualities, then he has every reason to believe his faith is spurious -- as phony as a $3. bill. (This is why growing/maturing in faith is so vitally important to the Christian life.)
And then the purpose to the checklist is the Blessed Assurance of God's Great Salvation:
2 Peter 1:10-11
10 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, 11 and you will receive a rich welcome into the eternal kingdom of our Lord and Savior Jesus Christ.
NIV
In summary, this spiritual inventory was given as a tool to warn us of the ever-present danger of self-deception.