Peter continues the theme of growth, “grow in the grace and knowledge of our Lord and Savior Jesus Christ.” We have an opportunity now, “waiting for… the coming of the day of God”. That day seems to be slow in coming, but really God is being patient, giving us time to grow and repent.
Just as people scoffed at the idea of a flood, so today people scoff at the idea of the return of Christ. Peter warns us not to be deceived by this thinking, remembering that “the day of the Lord will come like a thief”. In the mean time, lets “be diligent to be found by him without spot or blemish, and at peace.”