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... the Upanishads speak of jyotir brahma, the Light that is Brahman. Very often the sadhak feels a flow of Light upon him or around him or a flow of Light invading his centres or even his whole being and body, penetrating and illumining every cell and in that Light there grows the spiritual consciousness and one becomes open to all or many of its workings and realisations. Appositely I have a review of a book of Ramdas (of the Vision) before me in which is described such an experience got by the repetition of the Rama mantra, but, if I understand rightly, after a long and rigorous self-discipline. "The mantra having stopped automatically, he beheld a small circular light before his mental vision. This yielded him thrills of delight. This experience having continued for some days, he felt a dazzling light like lightning, flashing before his eyes, which ultimately permeated and absorbed him. Now an inexpressible transport of bliss filled every pore of his physical frame." It does not always come like that—very often it comes by stages or at long intervals, at first, working on the consciousness till it is ready. <ref>https://incarnateword.in/cwsa/29/bhakti-yoga-and-vaishnavism#p48</ref>

=What A Guru Can And Cannot Give=