There is the following nice statement in the Third Canto, Fifteenth Chapter, verse 25, of Śrīmad-Bhāgavatam, describing a devotee who achieves perfection by regularly executing devotional service: A person who is freed from the false egotism of material existence, or an advanced mystic, is eligible to enter into the kingdom of God, known as Vaikuṇṭha. Such a mystic becomes so joyful by constant execution of the regulative principles of devotional service that he thereby achieves the special favor of the Supreme Lord. Yamarāja, the mighty superintendent of death, is afraid to go near such a devotee; so we can imagine the potency of advanced devotional service, especially when devotees sit together and engage in talking of the pastimes of the Supreme Personality of Godhead. Those devotees express their feelings in such a way that they automatically melt with ecstasy, and many transcendental symptoms become manifested in their bodies.