She is the very essence of creation, preservation, and annihilation.
‘Durga’ is also known as ‘Durgatinashini’ meaning 'the one who eliminates sufferings.' Goddess Durga protects the human race from ego, hatred, prejudice, selfishness, jealousy, etc. She sends the arrogant miscreants to the prison (a material planet like the earth which is full of miseries). She is in charge of the material universe. Also, the Sanskrit root ‘Dur’ means ‘prison’ and ‘Ga’ means ‘go or approach’.
The word ‘Durga’ is derived from the Sanskrit word ‘Durg’ meaning a fort or a protective fortress. She epitomizes purity, knowledge, truth, and self-realization. In the Bhagavata Purana and Devi Bhagavad Purana as well as in the Shaktism scriptures, She has been described as the Energy of the Supreme Lord. She has been mentioned at many places in most Vedic scriptures and She has been immensely praised in the Devi Mahatmya or Saptashati. There would not be any Vedic scripture that does not mention glories of Durga sung by sages, saints, and devotees. Durga Saptashati For Chandi Patha: Glory of Goddess Durga