Old Tapes
Peter knew that the gospel stayed the same, but people change. This is why he wrote to remind them even though they knew it and were established in it. Life has a way of pulling us in many different directions. As we live, we experience joys, heartaches, pleasures, and pains. The powerful emotions that well up within us because of these things change our behavior and our thinking. God wanted us to have something solid to hold onto for all time. That is why He gave us the Bible.