This material nature, working under My direction, O son of Kunti, is producing all moving and unmoving beings. By its rule this manifestation is created and annihilated again and again. The material energy creates, maintains and devastates the entire cosmic manifestation because of directions given by the Supreme Personality of Godhead, who enters this universe as Garbhodakasayi Visnu but is untouched by the material qualities. In Bhagavad-gita the Lord refers to maya, the external energy, which creates this material world, as mama maya, My energy, because this energy works under the full control of the Lord. These facts can be realized only by those who are well versed in Vedic knowledge and advanced in Krsna consciousness.