The natural tendency of the human mind is to try to create some kind of system or organized methdology that one can follow to achieve a particular result. This tendency carries through into the search for the Divine as well. Those who follow the path of devotion may, particularly in early stages, rely on specific habitual practices or rituals or modes of worship. The direct path to the divine through Bhakti Yoga, however, requires no system, no rules, no fixed methodology.
In the Bhagavad Gita, Sri Krishna explains this secret to Arjuna, that when he gives up all rules of life and turns his entire heart and soul toward the divine completely, the result is assured. No religious practice, no form of worship, no specific set of moral rules, no specific type of meditation, no prescribed outer form of action is required in such a case.
Sri Aurobindo observes: “But there is the more intimate Yoga which from the first consists in this love and attains only by the intensity of its longing without other process or method. All the rest comes but it comes out of this, as leaf and flower out of the seed; other things are not the means of developing and fulfilling love, but the radiations of love already growing in the soul. This is the way that the soul follows when, while occupied perhaps with the normal human life, it has heard the flute of the Godhead behind the near screen of secret woodlands and no longer possesses itself, can have no satisfaction or rest till it has pursued and seized and possessed the divine flute-player. This is in essence the power of love itself in the heart and soul turning from earthly objects to the spiritual source of all beauty and delight.”
When the seeker is entirely possessed by this intensity of love for the Divine, all the various manifestations of love play across his heart. “The heart is the scene of this supreme idyll of the inner consciousness, but a heart which undergoes increasingly an intense spiritual change and becomes the radiantly unfolding lotus of the spirit. And as the intensity of its seeking is beyond the highest power of the normal human emotions, so also the delight and the final ecstasy are beyond the reach of the imagination and beyond expression by speech. For this is the delight of the Godhead that passes human understanding.”
The Taittirya Upanishad calls it “The Bliss of the Eternal from which words turn back without attaining and mind also returneth baffled…”
Sri Aurobindo, The Synthesis of Yoga, Part Three: The Yoga of Divine Love, Chapter 4, The Way of Devotion, pp. 550-551