Navratri is not only a festival but it is about defeat on demon by god.when we talk about Navratri we should know about it and what is the story behind this festival.
Navratri means nine day but do you know complete story about it. Devi have nine faces or say nine characters each character have its energy and a story. Navratri is a Sanskrit word which derives from nine nights ( nau raat).
How it start? There was a king name mahishasura, demon he was worshiping lord Shiva for many years, at last impress from his worship Shiva asked him what do you want tell me your desires. he asked for immortality and not to fear from death. It is not possible because its againt the nature principal so it not possible to grant him immortality.Then he played with his tricks in his mind and request him That I not die at the hands of men. May I not die at the hands of my foes means the Deva’s. May I not die at the hands the state of being three Brahma,Vishnu and Shiva. Hence Shiva had give power of eternity.As you know when ever a demon got a power they never use it in a good way they just misuse it and start troubling others. This time also same thing but as he was so much powerful. He started killing innocent people and Brahman’s and destroying there MATT (Place where Brahman do Yagya and Havana). His aim was to win all the Three Lok. After getting harassed by mahishasura devta’s of dev lok went to Shiva ,to find a way to get rid of the demon and to protect the world from the atrocities of mahishasura,Shiva cannot do anything in this because mahishasura get the power from Shiva and he knew that women cannot kill him because women’s are not powerful. So trinity of Shiva, Brahma and Vishnu united their power and created a energy, know as goddess Durga.
when he saw Durga the energy and powerful divine beauty of Durga, got fascinated.He knew that women cannot kill him as he got the power from Shiva and women’s are not power full compare to him so he asked Durga to marry him. The goddess Durga agreed to marry him , but there was a twist she put a condition that mahishasura have to win over her in battle. mahishasura, proudly he accepted the condition.
Then there was battle of nine days and night, at the end of ninth day mahishasura got killed by her and tenth day called vijayadashmi means 10th day she win over demon. so we are celebrating navaratri. We impress Goddess Durga in this nine day with our worship and we pray to remove negativity from our life and bless us. And want remove the demon which is our body. Hence she also be called Mahishasura Mardini.