There are many sacred writings in Hinduism. The texts are a type of general revelation. Many Hindus believe that some of these texts were ‘heard’ by rishis (Hindu scholars who have studied and teach the scriptures).
Many Hindus believe the most important sacred texts are the Vedas (the oldest Hindu scriptures). There are four Vedas still used by Hindus today:
Other important sacred texts include the Upanishads and the Bhagavad Gita.
I am the atman seated in the hearts of all beings; I am the beginning, the middle and also the end of all beings.Bhagavad Gita 10:20