The document provides commentary on 2 Peter 1:19-21. It summarizes that the Bible foretold Jesus' coming, testifies about his life and work, and leads us to have a relationship with him. It discusses how we should interpret the Bible by letting the Holy Spirit guide us, not relying on private interpretations. Finally, it explains how studying the Bible, which was written through the Holy Spirit, can transform our lives through wisdom, doctrine, and reproof.