“A scholarly brāhmaṇa expert in all subjects of Vedic knowledge is unfit to become a spiritual master without being a Vaiṣṇava, but a person born in a family of a lower caste can become a spiritual master if he is a Vaiṣṇava.” These brāhmaṇas were certainly very expert in chanting the Vedic mantras. They were competent in the performance of the Vedic rituals, and over and above this they were Vaiṣṇavas. Therefore by their spiritual powers they could call on the Supreme Personality of Godhead and enable their disciple, Mahārāja Nābhi, to see the Lord face to face. Śrīla Viśvanātha Cakravartī Ṭhākura comments that the word ojasā means “by dint of devotional service.”