The concept of the avatar (or incarnation) within Hinduism is most often associated with Vishnu, the preserver or sustainer aspect of God within the Hindu Trimurti. The avatars of Vishnu descend to empower the good and to destroy evil, thereby restoring Dharma and relieving the burden of the Earth. An oft-quoted passage from the Bhagavad Gita describes the typical role of an avatar of Vishnu: