The purpose is well stated in the Upanishads: “What world does he who meditates on Aum until the end of his life, win by That? If he meditates on the Supreme Being with the syllable Aum, he becomes one with the Light, he is led to the world of Brahman [the Absolute Being] Who is higher than the highest life, That Which is tranquil, unaging, immortal, fearless, and supreme.” – Prashna Upanishad 5:1,5,7