When Kāśī Miśra heard the proposal, he said, "I am very fortunate that Śrī Caitanya Mahāprabhu, the Lord of all prabhus, will stay at my home."
In this verse the word prabhupāda, referring to Śrī Caitanya Mahāprabhu, is significant. Regarding this, Śrīla Bhaktisiddhānta Sarasvatī Gosvāmī Prabhupāda comments, "Śrī Caitanya Mahāprabhu is the Supreme Personality of Godhead Himself, Śrī Kṛṣṇa, and all His servants address Him as Prabhupāda. This means that there are many prabhus taking shelter under His lotus feet." The pure Vaiṣṇava is addressed as prabhu, and this address is an etiquette observed between Vaiṣṇavas. When many prabhus remain under the shelter of the lotus feet of another prabhu, the address Prabhupāda is given. Śrī Nityānanda Prabhu and Śrī Advaita Prabhu are also addressed as Prabhupāda. Śrī Caitanya Mahāprabhu, Śrī Advaita Prabhu and Śrī Nityānanda Prabhu are all viṣṇu-tattva, the Supreme Personality of Godhead, Lord Viṣṇu. Therefore all living entities are under Their lotus feet. Lord Viṣṇu is the eternal Lord of everyone, and the representative of Lord Viṣṇu is the Lord's confidential servant. Such a person acts as the spiritual master for neophyte Vaiṣṇavas; therefore the spiritual master is as respectable as Śrī Kṛṣṇa Caitanya or Lord Viṣṇu Himself. For this reason the spiritual master is addressed as Oṁ Viṣṇupāda or Prabhupāda. The ācārya, the spiritual master, is generally respected by others as Śrīpāda, and the initiated Vaiṣṇavas are addressed as Prabhu. Prabhu, Prabhupāda and Viṣṇupāda are described in revealed scriptures like Śrīmad-Bhāgavatam, Caitanya-caritāmṛta and Caitanya-bhāgavata. In this regard, these scriptures present evidence accepted by unalloyed devotees.
The prākṛta-sahajiyās are not even worthy of being called Vaiṣṇavas. They think that only caste gosvāmīs should be called Prabhupāda. Such ignorant sahajiyās call themselves vaiṣṇava-dāsa-anudāsa, which means the servant of the servant of the Vaiṣṇavas (CC.2:13:80). However, they are opposed to addressing a pure Vaiṣṇava as Prabhupāda. In other words, they are envious of a bona fide spiritual master who is addressed as Prabhupāda, and they commit offenses by considering a bona fide spiritual master an ordinary human being or a member of a certain caste. Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura describes such sahajiyās as most unfortunate. Because of their misconceptions, they fall into a hellish condition.
(Sri Caitanya Caritamrta-----2:10:23-----purport).

The disciple must have the following qualifications. He must give up interest in the material bodily conception. He must give up material lust, anger, greed, illusion, madness and envy. He should be interested only in understanding the science of God, and he should be ready to consider all points in this matter. He should no longer think, "I am this body," or, "This thing belongs to me." One must love the spiritual master with unflinching faith, and one must be very steady and fixed. The bona fide disciple should be inquisitive to understand transcendental subject matter. He must not search out faults among good qualities, and he should no longer be interested in material topics. His only interest should be Kṛṣṇa, the Supreme Personality of Godhead.
As far as the mutual testing of the spiritual master and disciple is concerned, Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura explains that a bona fide disciple must be very inquisitive to understand the transcendental subject matter. As stated in Śrīmad-Bhāgavatam (11.3.21):
tasmād guruṁ prapadyeta
jijñāsuḥ śreya uttamam
"One who is inquisitive to understand the highest goal and benefit of life must approach a bona fide spiritual master and surrender unto him." A serious disciple must be alert when selecting a bona fide spiritual master. He must be sure that the spiritual master can deliver all the transcendental necessities. The spiritual master must observe how inquisitive the disciple is and how eager he is to understand the transcendental subject matter. The spiritual master should study the disciple's inquisitiveness for no less than six months or a year. A spiritual master should not be very anxious to accept a disciple because of his material opulences. Sometimes a big businessman or landlord may approach a spiritual master for initiation. Those who are materially interested are called viṣayīs (karmīs), which indicates that they are very fond of sense gratification. Such viṣayīs sometimes approach a famous guru and ask to become a disciple just as a matter of fashion. Sometimes viṣayīs pose as disciples of a reputed spiritual master just to cover their activities and advertise themselves as advanced in spiritual knowledge. In other words, they want to attain material success. A spiritual master must be very careful in this regard. Such business is going on all over the world. The spiritual master does not accept a materially opulent disciple just to advertise the fact that he has such a big disciple. He knows that by associating with such viṣayī disciples, he may fall down. One who accepts a viṣayī disciple is not a bona fide spiritual master. Even if he is, his position may be damaged due to association with an unscrupulous viṣayī. If a so-called spiritual master accepts a disciple for his personal benefit or for material gain, the relationship between the spiritual master and the disciple turns into a material affair, and the spiritual master becomes like a smārta-guru. There are many caste gosvāmīs who professionally create some disciples who do not care for them or their instructions. Such spiritual masters are satisfied simply to get some material benefits from their disciples. Such a relationship is condemned by Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura, who calls such spiritual masters and disciples a society of cheaters and cheated. They are also called bāulas or prākṛta-sahajiyās. Their aim is to make the connection between the spiritual master and the disciple into a very cheap thing. They are not serious in wanting to understand spiritual life.
(Sri Caitanya Caritamrta-----2:24:330-----purport).

“‘Now please hear from Me about the process of devotional service, which is applicable in any country, for any person, at all times and in all circumstances.
The cult of bhāgavata-dharma can be spread in all circumstances, among all people and in all countries. Many envious people accuse the Kṛṣṇa consciousness movement of spoiling the rigidity of so-called Hinduism. That is not actually the fact. Śrī Caitanya Mahāprabhu confirms that devotional service to the Lord—the cult of bhāgavata-dharma, which is now being spread as the Hare Kṛṣṇa movement—can be spread in every country, to every person, in any condition of life, and in all circumstances. Bhāgavata-dharma does not restrict pure devotees to the Hindu community. A pure devotee is above a brāhmaṇa; therefore it is not incompatible to offer the sacred thread to devotees in Europe, America, Australia, Japan, Canada, and so on. Sometimes these pure devotees, who have been accepted by Śrī Caitanya Mahāprabhu, are not allowed to enter certain temples in India. Also, some high-caste brāhmaṇas and gosvāmīsrefuse to take prasādam in the temples of the International Society for Krishna Consciousness. Actually this is against the instruction of Śrī Caitanya Mahāprabhu. Devotees can come from any country, and they can belong to any creed or race. On the strength of this verse, those who are actually devotees and followers of Śrī Caitanya Mahāprabhu must accept devotees from all parts of the world as pure Vaiṣṇavas. They should be accepted not artificially but factually. One should see how they are advanced in Kṛṣṇa consciousness and how they are conducting Deity worship, saṅkīrtana and Ratha-yātrā. Considering all these points, the envious persons must henceforward refrain from their malicious atrocities.
(Sri Caitanya Caritamrta-----2:25:120-----translation and purport).

Paramānanda Purī offered respects at the feet of Rāmacandra Purī, and Rāmacandra Purī strongly embraced him.
Because Rāmacandra Purī was a disciple of Mādhavendra Purī, both Paramānanda Purī and Śrī Caitanya Mahāprabhu offered him respectful obeisances. Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura comments that although Rāmacandra Purī was naturally very envious and although he was against the principles of Vaiṣṇavism—or, in other words, against the principles of the Supreme Personality of Godhead and His devotees—common people nevertheless addressed him as Gosvāmī or Gosāñi because he was superficially in the renounced order and dressed like a sannyāsī. In the modern age the title gosvāmī is used by a caste of gṛhasthas, but formerly it was not. Rūpa Gosvāmī and Sanātana Gosvāmī, for example, were called gosvāmī because they were in the renounced order. Similarly, because Paramānanda Purī was a sannyāsī, he was called Purī Gosvāmī. By careful scrutiny, therefore, one will find that gosvāmī is not the title for a certain caste; rather, it is properly the title for a person in the renounced order.
(Sri Caitanya Caritamrta-----3:8:8-----translation and purport).

Rāmānanda Rāya then explained the gradual process by which pure love for Kṛṣṇa is developed. He pointed out that the relationship a living entity has with the Supreme Personality of Godhead in any of the modes of affection is just suitable for him. Still, there are higher and lower relationships. A relationship with the Supreme Lord begins with the master-and-servant relationship and further develops into friendship, parental love and conjugal love. One who is situated in his particular relationship with the Supreme Personality of Godhead is in the best relationship for him. But when we study these different flavors of transcendental taste in relationship with the Supreme Lord, we can see that the neutral stage of realization (brahma-bhūta) is the first stage, that the stage of accepting the Lord as master and oneself as His servant is better, that the conception of oneself as the Lord's friend is even more developed, that a parental relationship with the Lord is of a still superior quality, and that conjugal love is the supreme relationship with the Lord.
In other words, self-realization with a sense of servitude for the Lord is certainly transcendental, but when a sense of fraternity is added the relationship develops, and as affection increases, this relationship develops into parenthood and conjugal love. Rāmānanda Rāya then quoted a verse from the Bhakti-rasāmṛta-sindhu (2.5.38) stating that spiritual affection for the Supreme Lord is transcendental in all cases, but that the individual devotee has a specific aptitude for a particular relationship, and that relationship is more relishable for him than the others.
Such transcendental relationships with the Supreme Lord cannot be manufactured by the mental concoctions of pseudo-devotees. In this connection, Rūpa Gosvāmī has stated in his Bhakti-rasāmṛta-sindhu (1.2.101) that devotional service which makes no reference to the Vedic scriptures and which does not follow the principles set forth therein can never be approved. Śrīla Bhaktisiddhānta Sarasvatī Gosvāmī Mahārāja has also remarked that professional spiritual masters, professional Bhāgavatam reciters, professional kīrtana performers and those engaged in devotional service according to their own mental concoctions cannot be accepted. In India there are various professional communities known as āula, bāula, kartābhajā, neḍā, daraveśa, sāṅi, ativāḍī, cūḍādhārī and gaurāṅga-nāgarī. A member of the Ventor Gosvāmī Society, or the caste called gosvāmī, cannot be accepted as a descendant of the six original gosvāmīs. Nor can so-called devotees who manufacture songs about Lord Caitanya, nor those who are professional priests or paid reciters, be accepted. One who does not follow the principles of the Pañcarātra, or one who is an impersonalist or addicted to sex life, cannot be compared with those who have dedicated their lives to the service of Kṛṣṇa. A pure devotee who is always engaged in Kṛṣṇa consciousness can sacrifice everything for the service of the Lord. One who has dedicated his life to the service of Lord Caitanya, Kṛṣṇa and the spiritual master, or a person who is following the principles of householder life, as well as one following the principles of the renounced life in the line of Caitanya Mahāprabhu, is a devotee and cannot be compared with professional men.
(Teachings of Lord Caitanya).

In the Middle Ages, after the disappearance of Lord Caitanya's great associate Lord Nityānanda, a class of priestly persons claimed to be the descendants of Nityānanda, calling themselves the gosvāmī caste. They further claimed that the practice and spreading of devotional service belonged only to their particular class, which was known as Nityānanda-vaṁśa. In this way, they exercised their artificial power for some time, until Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura, the powerful ācārya of the Gauḍīya Vaiṣṇava sampradāya, completely smashed their idea. There was a great hard struggle for some time, but it has turned out successfully, and it is now correctly and practically established that devotional service is not restricted to a particular class of men. Besides that, anyone who is engaged in devotional service is already at the status of being a high-class brāhmaṇa. So Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura's struggle for this movement has come out successful.
It is on the basis of his position that anyone can now become a Gauḍīya Vaiṣṇava, from any part of the world or any part of the universe. Anyone who is a pure Vaiṣṇava is situated transcendentally, and therefore the highest qualification in the material world, namely to be in the mode of goodness, has already been achieved by such a person. Our Kṛṣṇa consciousness movement in the Western world is based on the above-mentioned proposition of Śrīla Bhaktisiddhānta Sarasvatī Gosvāmī Prabhupāda, our spiritual master. On his authority, we are claiming members from all sections of the Western countries. The so-called brāhmaṇas claim that one who is not born into a brāhmaṇa family cannot receive the sacred thread and cannot become a high-grade Vaiṣṇava. But we do not accept such a theory, because it is not supported by Rūpa Gosvāmī nor by the strength of the various scriptures.
(Nectar of Devotion).

No one should criticize the bodily defects of a pure devotee. If there are such defects, they should be overlooked. What should be taken into account is the spiritual master's main business, which is devotional service, pure service to the Supreme Lord. As stated in Bhagavad-gītā (9.30):
api cet sudurācāro
bhajate mām ananya-bhāk
sādhur eva sa mantavyaḥ
samyag vyavasito hi saḥ
Even if a devotee sometimes seems to engage in abominable activities, he should be considered a sādhu, a saintly person, because his actual identity is that of one engaged in the loving service of the Lord. In other words, he is not to be considered an ordinary human being.
Even though a pure devotee may not be born in a brāhmaṇa or gosvāmī family, if he is engaged in the service of the Lord he should not be neglected. In actuality there cannot be a family of gosvāmīs based on material considerations, caste or heredity. The gosvāmī title is actually the monopoly of the pure devotees; thus we speak of the six Gosvāmīs, headed by Rūpa Gosvāmī and Sanātana Gosvāmī. Rūpa Gosvāmī and Sanātana Gosvāmī had practically become Mohammedans and had therefore changed their names to Dabira Khāsa and Sākara Mallika, but Śrī Caitanya Mahāprabhu Himself made them gosvāmīs. Therefore the gosvāmī title is not hereditary. The word gosvāmī refers to one who can control his senses, who is master of the senses. A devotee is not controlled by the senses, but is the controller of the senses. Consequently he should be called svāmī or gosvāmī, even though he may not be born in a gosvāmī family.
According to this formula, the gosvāmīs who are descendants of Śrī Nityānanda Prabhu and Śrī Advaita Prabhu are certainly devotees, but devotees coming from other families should not be discriminated against; indeed, whether the devotees come from a family of previous ācāryas or from an ordinary family, they should be treated equally. One should not think, "Oh, here is an American gosvāmī," and discriminate against him. Nor should one think, "Here is a nityānanda-vaṁśa-gosvāmī." There is an undercurrent of protest against our awarding the title gosvāmī to the American Vaiṣṇavas of the Kṛṣṇa consciousness movement. Sometimes people flatly tell the American devotees that their sannyāsa or title of gosvāmī is not bona fide. However, according to the statements of Śrīla Rūpa Gosvāmī in this verse, an American gosvāmī and a gosvāmī in a family of ācāryas are nondifferent.
(Nectar of Instruction).

From the ocean of loving compassion, which had been completely dammed up, Lord Nityānanda cut a canal of love of Godhead and flooded the entire world. And then some persons called caste Gosvāmīs, claiming to be the Lord's descendants, again dammed up that ocean of mercy with their malpractices of fruitive activities and rituals. Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura once more cut open the canal of love of Godhead and brought in the flood waters. And now are we, of all persons, trying once more to dam it up like the caste Gosvāmīs? By the influence of the good association of the Lord's devotees, even a fool and rascal like me, possessed of a destructive, demoniac mentality, can accumulate enough piety to become inspired to serve the Supreme Lord.
By nature children are restless and playful, so in the kindergarten they are given toys and games to interest them in learning. Similarly, a neophyte is trained to perform activities in the mood of sacrifice, and he is encouraged to worship the Deities according to the scriptural injunctions. The expert Vaiṣṇava preceptor then gradually draws him toward the platform of pure devotion by narrating the spiritually potent topics of Kṛṣṇa consciousness and giving him the remnants of food offered to the Supreme Lord. These two aspects of devotional life act like medicine on the neophyte, who, like the rest of the world, is affected by the material disease. Devotional service to Lord Kṛṣṇa is the living entity's eternal birthright; it is not a new subject fabricated by the human mind. A base fool thinks that devotion to Lord Kṛṣṇa is merely a mundane psychological state of mind. But in truth devotional service is our eternal spiritual substance—"the essential spiritual reality" (vāstava-vastu), according to the Śrīmad-Bhāgavatam (1.1.2). Devotion to Lord Kṛṣṇa can be invoked naturally in the purified hearts of devotees. When a disease is cured, the patient feels hungry; similarly, when a neophyte accrues sufficient piety by associating with devotees, he feels attraction for devotional service within his heart.
(Renunciation through Wisdom).