The Lord says in Bhagavad-gītā (BG 9.10):
- mayādhyakṣeṇa prakṛtiḥ</dd>
- sūyate sacarācaram
- hetunānena kaunteya
- jagad viparivartate
"This material nature, working under My direction, O son of Kuntī, 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 Garbhodakaśāyī Viṣṇu but is untouched by the material qualities. In Bhagavad-gītā the Lord refers to māyā, the external energy, which creates this material world, as mama māyā, "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 Kṛṣṇa consciousness.