In his ‘Saundaryalahari’ the great Adi Shankara states: If Shiva is united with Shakti, he is able to create. If he is not, he is incapable even of stirring.” This is the central theme in the Devi Gita in the Devi Bhagavata Purana. This soon became the central texts of Shaktism. The history and development of Mahavidya worship was a turning point in Shaktism. It also marks the Bhakti aspects of worship. The Shakta tradition specifically worships Shiva’s consort, in her various forms such as Parvathi, Durga, Kali etc. The worship of Sita or Radha is not strictly Shaktism but points to the ubiquitous role of female deities in Hinduism. In all, Her children found it easy to approach and pray to the loving Mother.
Feminine divinity which ranged from calm and beautiful to terrifying and horrible Goddesses were accepted to represent Shakti. Devi also appears in the Markandeya Purana. It is in the Tantras that She appears to take the role of the Supreme. Shaktism had a profound effect on modern spiritualists such as Ramakrishna Parmahamsa and Sri Aurobindo. However, there is no rejection of masculine power by the Divine Feminine. The Divine Feminine, Masculine or Neuter divinity are deemed to be inactive in the absence of Shakti
In the Devi Bhagavata Purana VII.33.13-15, Devi declares: "I am Manifest Divinity, Unmanifest Divinity, and Transcendent Divinity. I am Brahma, Vishnu and Shiva, as well as Saraswati, Lakshmi and Parvati. I am the Sun and I am the Stars, and I am also the Moon. I am all animals and birds, and I am the outcaste as well, and the thief. I am the low person of dreadful deeds, and the great person of excellent deeds. I am Female, I am Male, and I am Neuter."