Peter's time on earth was short, and so he wrote to admonish believers in the churches to stay firm in their faith. Peter tells them that they did not follow cunningly devised fables about Christ...it's not made up. He gives them evidences for his own faith and devotion to Christ. If you have ever wondered if it's right to believe in Christ or if we're simply believing a fable, then you'll enjoy hearing the evidences from Peter.