polished it is, the more clearly it reflects the glory of God. Once we start to clean the mirror—which is, essentially, the work of prayer—then the mirror slowly comes into view, the dust is gently swept away from its surface, and the light can shine once more. While the mind often behaves as if the heart did not exist (indeed, it often behaves as if nothing else existed), the heart keeps a very close watch on the mind, acting as a hidden guardian, compensating and mending where possible, ministering,