Simeon Peter, a servant and apostle of Jesus Christ, greets those who have received a faith as precious as his through the righteousness of our God and Savior Jesus Christ, and wishes them grace and peace in abundance (vv. 1-2).
His divine power has granted us everything we need for life and godliness, through the knowledge of him who called us by his own glory and excellence. Through these he gave precious promises so that we may share the divine nature, escaping the world's corruption. So Peter asks for diligent effort: add to faith virtue, to knowledge self-control, then steadfastness, godliness, brotherly affection and love. When these qualities increase, they keep believers from being unfruitful. Whoever lacks them is blind and has forgotten the cleansing from past sins. So they should confirm their calling and election; then they will never fall, and entrance into the eternal kingdom of our Lord and Savior Jesus Christ will be richly provided (vv. 3-11).
Peter says he will keep reminding them of these things, though they know them, as long as he is in his body, and he knows he will soon put it off, as the Lord showed him. He will see that they can recall them after his departure. They did not follow invented myths: they were eyewitnesses of his majesty, when he received honor and glory from God the Father and a voice from the Majestic Glory called him his beloved Son. Peter heard that voice on the holy mountain (vv. 12-18).
We also have the prophetic word more fully confirmed, a lamp shining in a dark place until the day dawns and the morning star rises in their hearts. No prophecy of Scripture comes from someone's own interpretation, because no prophecy was ever produced by the will of man, but men spoke from God as they were carried along by the Holy Spirit (vv. 19-21).