Second Peter is a powerful and urgent farewell letter from the apostle, written to fortify the church against internal threats. With his own death approaching, Peter passionately warns believers against false teachers who twist the truth, promote licentiousness, and deny the Lord's return. He counters their deception by reminding his readers of the reliability of the apostolic testimony—grounded in eyewitness events like the Transfiguration—and the divine origin of Scripture. The letter's central concern is the certainty of the Day of the Lord. Answering the scoffers, Peter explains that God's apparent delay is an expression of his patience, and he calls believers to live holy and godly lives as they eagerly await the new heavens and new earth.