(Click to enlarge photo of His Divine Grace A.C. Bhaktivedanta Swami Prabhupada)
"A pure devotee is completely surrendered to the lotus feet of the Lord, and only by his love does he conquer Kṛṣṇa, who cannot be conquered by anyone."
(Caitanya-caritāmṛta Madhya 8.66, Purport)
"The Lord is all-powerful, and by His grace His pure devotee can be as powerful as He may desire, and there is no limit to it."
(Śrīmad-Bhāgavatam 1.15.13, Purport)
"Śrīla Vṛndāvana dāsa Ṭhākura has sung that the devotees of Lord Caitanya are so powerful that each one of them can deliver a universe."
(Śrīmad-Bhāgavatam 4.24.58, Purport)
"Pure devotees of the Lord are more powerful than the waters of the sacred river Ganges. One can derive spiritual benefit out of prolonged use of the Ganges waters. But one can be sanctified at once by the mercy of a pure devotee of the Lord."
(Śrīmad-Bhāgavatam 1.1.15, Purport)
"The Supreme Personality of Godhead said to the brāhmaṇa: I am completely under the control of My devotees. Indeed, I am not at all independent. Because My devotees are completely devoid of material desires, I sit only within the cores of their hearts. What to speak of My devotee, even those who are devotees of My devotee are very dear to Me."
"It is said that a single pure devotee of the Lord can deliver all the fallen souls of the world. Thus one who is actually in the confidence of a pure devotee like Nārada or Śukadeva Gosvāmī and thus is empowered by one's spiritual master, as Nārada was by Brahmājī, can not only deliver himself from the clutches of māyā, or illusion, but can deliver the whole world by his pure and empowered devotional strength."
(Śrīmad-Bhāgavatam 2.8.5, Purport)
"Not only does a pure devotee purify his own personal existence, but whoever becomes his disciple also becomes purified and is ultimately able to enter the kingdom of God without difficulty. In other words, not only can a pure devotee easily surpass death, but by his grace his followers can also do so without difficulty. The power of devotional service is so great that a pure devotee can electrify another person by his transcendental instruction on crossing over the ocean of nescience."
(Kṛṣṇa Book, Chapter 87)
"My Lord, devotees like your good self are verily holy places personified. Because you carry the Personality of Godhead within your heart, you turn all places into places of pilgrimage."
"A devotee, wherever he is, that is Vṛndāvana. That is Vṛndāvana tīrtha. Kurvanti tīrthāni. A devotee, a pure devotee, can make any hell a tīrtha, a holy place. That is devotee."
(Srila Prabhupada Lecture, Aligarh, October 9, 1976)
"One can immediately purify his entire house simply by remembering exalted personalities, to say nothing of directly seeing them, touching their lotus feet, washing their feet or offering them places to sit."
(Caitanya-caritāmṛta Antya 7.10)
"A true representative of the Lord like Nārada, Śukadeva Gosvāmī, Lord Caitanya, the six Gosvāmīs and later Śrīla Bhaktivinoda Ṭhākura and Śrīmad Bhaktisiddhānta Sarasvatī Ṭhākura, etc., can deliver all people by their empowered devotional service."
(Śrīmad-Bhāgavatam 2.8.5, Purport)
"When the pure devotees assemble to chant, hear and talk about the Supreme Personality of Godhead, the place where they assemble becomes Vaikuṇṭha. For the devotee there is no need to pray to the Lord for transferal to the Vaikuṇṭha world. A pure devotee can create Vaikuṇṭha or Vṛndāvana anywhere simply by chanting the glories of the Lord without offense."
(Śrīmad-Bhāgavatam 4.30.33, Purport)
"The verdict of all revealed scriptures is that by even a moment's association with a pure devotee, one can attain all success."
(Caitanya-caritāmṛta Madhya 22.54)
"Only a pure devotee can convert others to pure devotional service."
(Caitanya-caritāmṛta Madhya 24.98, Purport)
Devotee: I understand, Śrīla Prabhupāda, that the pure devotee can be as pervasive as Supersoul?
Devotee: By the mercy of Supersoul, he can be present in many places at once?
Prabhupāda: Yes. By the grace of Kṛṣṇa, a devotee can become anything.
Devotee(2): So in other words that means the pure devotees can be omniscient?
Prabhupāda: Everything. God is omniscient, so a pure devotee can become omniscient by the grace of God.
(Srila Prabhupada Morning Walk, Los Angeles, June 8, 1976)
"Kṛṣṇa is yours; you have the power to give Him to me. I am simply running behind you shouting, 'Kṛṣṇa! Kṛṣṇa!'"
(Ohe Vaiṣṇava Thākura, Verse 4)