透過講述一個比喻故事，納堂讓國王承認自己的罪行。

達味悔改了，上主也赦免了他。然而，他將終生遭受嚴厲的懲罰，他的後代也將受到牽連。

寬恕與懲罰：它們讓我們明白，憐憫與公義也必須並行不悖。罪惡是可怕的，即使我們常常像鴕鳥一樣把頭埋進沙子裡。

By telling a parable, Nathan finds a way to have the king acknowledge his guilt.

David repents and God forgives him. However, there is a heavy punishment awaiting him for the rest of his life and even among his heirs.

Forgiveness and penalty: they let us understand that mercy and justice too need to go hand in hand. Sin is a terrible thing, even if we often try to do like the ostrich and hid our head in the sand.