Jnana yoga understood as "realization or gnosis", referring to a "path of study" wherein one knows the unity between self and ultimate reality called Brahman in Hinduism. This explanation is found in the ancient Upanishads and the Bhagavad Gita. Jñāna yoga is the path towards attaining "jnana". It is one of the three classical types of yoga mentioned in Hindu philosophies, the other two being karma yoga and bhakti. In modern classifications, classical yoga, being called Raja yoga, is mentioned as a fourth one, an extension introduced by Vivekananda. Jnana yoga, states Stephen Phillips, is the "yoga of meditation". Of the three
Bhakti movement concept of the Ultimate Reality as formless, without attributes or quality. "Saguna" Brahman, in contrast, was envisioned and developed as with form, attributes and quality. The two had parallels in the ancient pantheistic unmanifest and theistic manifest traditions, respectively, and traceable to Arjuna-Krishna dialogue in the Bhagavad Gita. It is the same Brahman, but viewed from two perspectives, one from "Nirguni" knowledge-focus and other from "Saguni" love-focus, united as Krishna in the Gita. "Nirguna" bhakta's poetry were "Jnana-shrayi", or had roots in knowledge. "Saguna" bhakta's poetry were "Prema-shrayi", or with roots in love. In Bhakti, the emphasis is reciprocal love