The blazing fire of material nature is supervised by Durga. Often she is portrayed with weapons in her hands. She has ten hands, and each holds a different type of weapon. This indicates that she is ruling all ten directions of this universe. She wields the different weapons to chastise the demons. There is one famous picture of a demon struggling with a lion, and the Goddess Durga is pulling the demon's hair and pushing her trident against his chest. If we study this picture we can determine that we are the demon and that the trident is the threefold miseries of material existence from which we are always suffering. Some miseries are inflicted by other living entities, some are inflicted by natural disasters, and some are inflicted by the mind and body themselves. In one way or another we are always struggling against these three types of miseries. No one in the material creation can say that he is free from them. The trident of this material nature is pressed against everyone's chest, and because of this, pure happiness within this material world is not possible. We may try to satisfy Mother Durga by worshiping her or by giving her some bribe, but Durga is not so easily bribed.

(From "Elevation to Krsna Consciousness" by Srila Prabhupada)