Narada-bhakti-sutra
Purport & Translation By A.C. Bhaktivedanta Swami Prabhupada
Text 4
TRANSLATION
Upon achieving that stage of transcendental devotional service in pure love of God, a person becomes perfect, immortal, and peaceful.
PURPORT
The part-and-parcel living entities are entangled in the conditioned life of material existence. Because of their diverse activities they are wandering all over the universe, transmigrating from one body to another and undergoing various miseries. But when a fortunate living entity somehow comes in contact with a pure devotee of the Lord and engages in devotional service, he enters upon the path of perfection. If someone engages in devotional service in all seriousness, the Lord instructs him in two ways—through the pure devotee and from within—so that he can advance in devotional service. By cultivating such devotional service, he becomes perfect.
The Hare Krishna Movement 