The Upanishads are “wisdom teachings” that explore the deeper, internal meaning of sacrifice. Jnana – revolutionary wisdom that transforms and enlightens one's consciousness – is an important goal of Upanishadic teachings.
The Upanishads are the philosophical-religious texts of Hinduism (also known as Sanatan Dharma meaning “Eternal Order” or “Eternal Path”) which develop and explain the fundamental tenets of the religion