Śrīla Rūpa Gosvāmī, a confidential devotee taught for more than ten days continually by Lord Caitanya, wrote:
namo mahā-vadānyāya kṛṣṇa-prema-pradāya te
kṛṣṇāya kṛṣṇa-caitanya-nāmne gaura-tviṣe namaḥ
(CC-2:19:53)
"I offer my respectful obeisances unto the Supreme Lord Śrī Kṛṣṇa Caitanya, who is more magnanimous than any other avatāra, even Kṛṣṇa Himself, because He is bestowing freely what no one else has ever given—pure love of Kṛṣṇa."
Lord Caitanya's teachings begin from the point of surrender to Kṛṣṇa. He does not pursue the paths of karma-yoga or jñāna-yoga or haṭha-yoga but begins at the end of material existence, at the point where one gives up all material attachment. In the Bhagavad-gītā Kṛṣṇa begins His teachings by distinguishing the soul from matter, and in the Eighteenth Chapter He concludes at the point where the soul surrenders to Him in devotion. The Māyāvādīs would have all talk cease there, but at that point the real discussion only begins. As the Vedānta-sūtra says at the very beginning, athāto brahma jijñāsā: "Now let us begin to inquire about the Supreme Absolute Truth." Rūpa Gosvāmī thus praises Lord Caitanya as the most munificent incarnation of all, for He gives the greatest gift by teaching the highest form of devotional service. In other words, He answers the most important inquiries that anyone can make.
(Sri Catanya Caritamrta-----introduction).

Śrīla Rūpa Gosvāmī, in his Upadeśāmṛta (3), advises that to make rapid advancement in the cult of devotional service one should be very active and should persevere in executing the duties specified in the revealed scriptures and confirmed by the spiritual master. Accepting the path of liberated souls and the association of pure devotees enriches such activities.
(Sri Catanya Caritamrta------1:2:117-----translation).

When Rūpa Gosvāmī met Lord Śrī Caitanya Mahāprabhu at Prayāga (Allahabad), he offered his respectful obeisances by submitting that Lord Caitanya was more magnanimous than any other avatāra of Kṛṣṇa because He was distributing love of Kṛṣṇa. His mission was to enhance love of Godhead. In the human form of life the highest achievement is to attain the platform of love of Godhead.
(Sri Catanya Caritamrta------1:4:41-----purport).

Śrīla Rūpa Gosvāmī, in his Laghu-bhāgavatāmṛta, has quoted from the Padma Purāṇa, where it is stated that Lakṣmī-devī, the goddess of fortune, after seeing the attractive features of Lord Kṛṣṇa, was attracted to Him, and to get the favor of Lord Kṛṣṇa she engaged herself in meditation. When asked by Kṛṣṇa why she engaged in meditation with austerity, Lakṣmī-devī answered, "I want to be one of Your associates like the gopīs in Vṛndāvana." Hearing this, Lord Śrī Kṛṣṇa replied that it was quite impossible. Lakṣmī-devī then said that she wanted to remain just like a golden line on the chest of the Lord. The Lord granted the request, and since then Lakṣmī has always been situated on the chest of Lord Kṛṣṇa as a golden line. The austerity and meditation of Lakṣmī-devī are also mentioned in Śrīmad-Bhāgavatam (10.16.36), where the Nāga-patnīs, the wives of the serpent Kāliya, in the course of their prayers to Kṛṣṇa, said that the goddess of fortune, Lakṣmī, also wanted His association as a gopī and desired the dust of His lotus feet.
(Sri Catanya Caritamrta------1:5:223-----purport).

The Bhakti-rasāmṛta-sindhu of Rūpa Gosvāmī explains the superexcellent quality of devotional service as follows:
brahmānando bhaved eṣa cet parārdha-guṇī-kṛtaḥ
naiti bhakti-sukhāmbhodheḥ paramāṇu-tulām api
"If multiplied billions of times, the transcendental pleasure derived from impersonal Brahman realization still could not compare to even an atomic portion of the ocean of bhakti, or transcendental service." (B.r.s. 1.1.38)
(Sri Catanya Caritamrta------1:6:42-----purport).

When Śrī Caitanya Mahāprabhu started for Vṛndāvana through the forest of Madhya Pradesh (Jhārikhaṇḍa), Rūpa Gosvāmī left home and sent news to Sanātana that he was leaving with his younger brother (Anupama Mallika) to meet Śrī Caitanya Mahāprabhu. Śrīla Rūpa Gosvāmī finally reached Prayāga and met with Śrī Caitanya Mahāprabhu for ten successive days. During this time, Vallabha Bhaṭṭa extended an invitation to the Lord with great respect. Śrī Caitanya Mahāprabhu introduced Śrīla Rūpa Gosvāmī to Vallabha Bhaṭṭa. After this, a brāhmaṇa scholar named Raghupati Upādhyāya arrived and discussed Kṛṣṇa consciousness with the Lord. Kavirāja Gosvāmī then extensively describes the living condition of Śrī Rūpa and Sanātana at Vṛndāvana. During the ten days at Prayāga, Śrīla Rūpa Gosvāmī was instructed by the Lord, who gave him the basic principles of the Bhakti-rasāmṛta-sindhu. The Lord then sent Śrīla Rūpa Gosvāmī to Vṛndāvana. The Lord Himself returned to Vārāṇasī and stayed at the home of Candraśekhara.
(Sri Catanya Caritamrta------2:19------summary).

To be empowered by the Supreme Personality of Godhead, one has to qualify himself. This means that one must engage twenty-four hours daily in the loving devotional service of the Lord. The material position of a devotee doesn’t matter because devotional service is not dependent on material considerations. In his earlier life, Śrīla Rūpa Gosvāmī was a government officer and a gṛhastha. He was not even a brahmacārī or sannyāsī. He associated with mlecchas and yavanas, but because he was always eager to serve, he was a qualified recipient for the Lord's mercy. A sincere devotee can therefore be empowered by the Lord regardless of his situation. In the preceding verse from the Bhakti-rasāmṛta-sindhu, Śrīla Rūpa Gosvāmī has described how he was personally empowered by the Lord. He further states in the Bhakti-rasāmṛta-sindhu (1.2.187):
īhā yasya harer dāsye karmaṇā manasā girā
nikhilāsv apy avasthāsu jīvan-muktaḥ sa ucyate
"A person acting in the service of Kṛṣṇa with his body, mind and words is a liberated person even in the material world, although he may be engaged in many so-called material activities."
(Sri Catanya Caritamrta------1:19:135-----purport).

By associating with nondevotees, one breaks the regulative principles and is thereby lost. In the Upadeśāmṛta of Śrīla Rūpa Gosvāmī, it is said:
atyāhāraḥ prayāsaś ca prajalpo niyamāgrahaḥ
jana-saṅgaś ca laulyaṁ ca ṣaḍbhir bhaktir vinaśyati
(Nectar of instruction)
“One's devotional service is spoiled when he becomes too entangled in the following six activities: (1) eating more than necessary or collecting more funds than required, (2) overendeavoring for mundane things that are very difficult to attain, (3) talking unnecessarily about mundane subject matters, (4) practicing the scriptural rules and regulations only for the sake of following them and not for the sake of spiritual advancement, or rejecting the rules and regulations of the scriptures and working independently or whimsically, (5) associating with worldly-minded persons who are not interested in Kṛṣṇa consciousness, and (6) being greedy for mundane achievements.”
(Sri Catanya Caritamrta------1:19:157-----purport).

The present Kṛṣṇa consciousness movement is also based on the authority of Śrīla Rūpa Gosvāmī Prabhupāda. We are therefore generally known as rūpānugas, or followers in the footsteps of Śrīla Rūpa Gosvāmī Prabhupāda. It is only for our guidance that Śrīla Rūpa Gosvāmī prepared his book Bhakti-rasāmṛta-sindhu, which is now presented in the form of The Nectar of Devotion. Persons engaged in the Kṛṣṇa consciousness movement may take advantage of this great literature and be very solidly situated in Kṛṣṇa consciousness.
(Nectar of Devotion ------preface).