The books of 1 and 2 Peter are letters written by the apostle Peter to encourage and instruct early Christians who were facing persecution and false teachings. In 1 Peter, Peter emphasizes the importance of living holy lives and enduring suffering for the sake of Christ. He also reminds believers of their identity as chosen people and encourages them to love one another and submit to authority. In 2 Peter, Peter warns against false teachers and urges believers to grow in their knowledge of God and to be on guard against deception. He also emphasizes the certainty of Christ's return and the importance of living in anticipation of that day. Overall, the books of 1 and 2 Peter serve as a call to faithfulness, perseverance, and spiritual growth in the face of trials and challenges.