Nath, also called Natha, are a Shaiva sub-tradition within Hinduism in India and Nepal. A medieval movement, it combined ideas from Buddhism, Shaivism and Yoga traditions of the Indian subcontinent. The Naths have been a confederation of devotees who consider Shiva as their first lord or guru, with varying lists of additional gurus. Of these, the 9th or 10th century Matsyendranatha and the ideas and organization mainly developed by Gorakhnath are particularly important. Gorakhnath is considered the originator of the Nath Panth.

Guru is a Sanskrit term for a "mentor, guide, expert, or master" of certain knowledge or field. In pan-Indian traditions, a guru is more than a teacher: traditionally, the guru is a reverential figure to the disciple or student, with the guru serving as a "counselor, who helps mold values, shares experiential knowledge as much as literal knowledge, an exemplar in life, an inspirational source and who helps in the spiritual evolution of a student". Whatever language it is written in, Judith Simmer-Brown says that a tantric spiritual text is often codified in an obscure twilight language so that it cannot be understood by anyone without the verbal explanation of a qualified teacher, the guru. A guru is also one's spiritual guide, who helps one to discover the same potentialities that the guru has already realized.