Navratri is divided into three chapters — each consisting of three days. They celebrate different aspects and attributes of the supreme Goddess, who is believed to be running the cosmic show as supreme Prakriti in conjunction with Brahma, the supreme Purusha, who is believed to be lying static, inert, though being the fount of the primordial energy that keeps the show running through his consort Prakriti, over eternity.
On the initial three days, the Goddess is worshipped as Durga. Goddess Durga embodies the might of the divine to crush the Asuric forces and eliminating the flaws inherent in human nature and character. On the next three days, she is worshipped as the mother of spiritual wealth as Goddess lakshmi. She is the one who is considered to have the power to shower on her devotees the wealth that is never exhausted. In the final phase-the last three days of the celebration- the Goddess is worshipped as Saraswati, the Devi of wisdom who helps the devotees with spiritual enlightenment and overall success in life. She is also worshipped under nine different names over the nine days of Navratri celebration. On each of these nine days, the Goddess is supposed to assume a new character and a new look. She is worshipped as Shailputri, Brahmacharini, Chandraghanta, Kushmanda, Skanda Mata, Katyayani, Kalratri, Maha Gauri and Siddhidatri. For the initial six days, the celebrations are limited to homes of the devotees.
Dwelling on the nine forms of the Goddess, Ashish Purohit , a senior priest, said the second form of Goddess Durga is known as 'Brahmacharini'. “The name is derived from Brahma. She is also a form of Uma or Parvati, a form of Mata Shakti, the supreme energy that is engaged in running the cosmic show,” he added.