A blacksmith brought home a new dog. The first day the blacksmith was working in his shop he would pound and pound the metal with his hammer. Immediately the dog would bark loudly. Day after day, as he worked with his hammer, his dog would jump up and bark. After a few days, the barking got softer and softer. Then a couple of weeks later the dog stopped barking when the smith started hammering….That is the problem with the lost. They have suppressed the truth of their sins so long that they have become dull towards the hammer of the law written on their hearts. The need a wake-up call through the preaching of the holy law of God.
Michael A. Robinson, God Does Exist!, Author House 2006, p.197