On the battlefield of Kurukshetra, Lord Krishna appeared to Prince Arjuna as Vishwarupa, the universal form, all that is. All the worlds, deities, sages, and peoples appeared within this total form of Lord Vishnu. Another word for this omni-form is Virata.
Shri Mataji Nirmala Devi has explained that the Virata is the integrated brain and nervous system of the Divine, which can be awakened within us. It is the totality. It is everything that exists, the body of the Cosmos. It is also reflected within each human being as the subtle system of chakras and energy channels.