“Yet if it had not been for the law, I would not have known sin…The very commandment that promised life proved to be death to me” (Rom.7:7,10). “Then he took him by the hand, and led him into a very large Parlor that was full of dust, because it had never been swept…Then he called for a man to sweep it. When he swept, the dust began to fly, so much that Christian was almost choked. Then Interpreter said, ‘Bring some water and sprinkle the room.’ Christian asked, ‘What does this mean?’ And Interpreter answered, ‘This Parlor is the heart of man…the dust is original sin and inward corruption, which have defiled the whole person. The one who began to sweep is the Law of God. The one who brought the water and cleansed the room is the Gospel of God. The Law, instead of cleansing the heart, stirs up sin, revives it, gives it strength, and increases it in our souls. It can never give us the power to subdue sin. But when the Gospel comes, as in the water that washed the room, our sin is conquered and our soul is made clean.'”
John Bunyan
Pilgrim’s Progress