Persons who have been thoroughly cleansed by devotional service and are always joyful, being situated in elevated consciousness, who are very much attached to studying Śrīmad-Bhāgavatam, who are always cheerful in the association of devotees, who have accepted the lotus feet of Kṛṣṇa as the ultimate shelter of their lives, and who are pleased to perform all details of devotional service—such devotees have in their pure hearts the transcendental ecstasy of attachment, which has been developed through old and new reformatory practices. That ecstatic state of being, enriched with love of Kṛṣṇa and transcendental experience, gradually develops into the mature bliss of spiritual life. Tasting such spiritual bliss is not possible for those who are not situated in Kṛṣṇa consciousness and devotional service. This fact is further corroborated in the Bhakti-rasāmṛta-sindhu (2.5.131), where it is said: "It is very difficult for the nondevotee to understand the taste of devotional service. Only one who has completely taken shelter of the lotus feet of Kṛṣṇa and whose life is merged in the ocean of devotional service can understand this transcendental pleasure."
Lord Caitanya thus briefly explained the transcendental situation, the spiritual relish of life, which He called the fifth stage of perfection. The first stage of perfection is to become a religious man in the ordinary sense, as known in the material world, the second stage of perfection is to become materially rich, the third stage of perfection is the attainment of complete sense enjoyment, and the fourth stage of perfection is liberation. But above liberation are those in the fifth stage of perfection, those who are established in Kṛṣṇa consciousness, or devotional service to the Lord. Already liberated, devotees who reach the highest perfection of devotional service in Kṛṣṇa consciousness experience the taste of the ecstasy of spiritual relish.