Vishnu is known as "The Preserver" within the Trimurti, the Hindu trinity that includes Brahma and Shiva. In Vaishnavism tradition, Vishnu is the supreme being who creates, protects and transforms the universe. In the Shaktism tradition, the Goddess, or Devi, is described as one of the supreme, yet Vishnu is revered along with Shiva and Brahma. A goddess is stated to be the energy and creative power (Shakti) of each, with Lakshmi the equal complementary partner of Vishnu He is one of the five equivalent deities in Panchayatana puja of the Smarta tradition of Hinduism
According to the Vaishnavism sect, the highest form of Ishvar is with qualities (Saguna), and have certain form but is limitless, transcendent and unchanging absolute Brahman, and the primal Atman (soul, self) of the universe There are many both benevolent and fearsome depictions of Vishnu. In benevolent aspects, he is depicted as an omniscient sleeping on the coils of the serpent Adishesha (who represents time) floating in the primeval ocean of milk called Kshira Sagara with wife Lakshmi.
Whenever the world is threatened with evil, chaos, and destructive forces, Vishnu descends in the form of an avatar (incarnation) to restore the cosmic order and protect Dharma. Dashavatara are the ten primary avatars (incarnations) of Vishnu. Out of the ten, Rama and Krishna avatars are most important.
