Śrīla Bhaktivinoda Ṭhākura sings:
janmāobi more icchā yadi tora
bhakta-gṛhe jani janma ha-u mora
kīṭa-janma ha-u yathā tuyā dāsa
"My Lord, if You want me to take birth and accept a material body again, kindly do me this favor: allow me to take birth in the home of Your servant, Your devotee. I do not mind being born there even as an insignificant creature like an insect."
(Srimad Bhagavatam----9:13:9----purport).

A jealous person in the dress of a Vaiṣṇava is not at all happy to see the success of another Vaiṣṇava in receiving the Lord's mercy. Unfortunately, in this Age of Kali there are many mundane persons in the dress of Vaiṣṇavas, and Śrīla Bhaktivinoda Ṭhākura has described them as disciples of Kali. He says, kali-celā. He indicates that there is another Vaiṣṇava, a pseudo Vaiṣṇava with tilaka on his nose and kaṇṭhī beads around his neck. Such a pseudo Vaiṣṇava associates with money and women and is jealous of successful Vaiṣṇavas. Although passing for a Vaiṣṇava, his only business is earning money in the dress of a Vaiṣṇava. Bhaktivinoda Ṭhākura therefore says that such a pseudo Vaiṣṇava is not a Vaiṣṇava at all but a disciple of Kali-yuga. A disciple of Kali cannot become an ācārya by the decision of some high-court. Mundane votes have no jurisdiction to elect a Vaiṣṇava ācārya. A Vaiṣṇava ācārya is self-effulgent, and there is no need for any court judgment. A false ācārya may try to override a Vaiṣṇava by a high-court decision, but Bhaktivinoda Ṭhākura says that he is nothing but a disciple of Kali-yuga.
(Sri Caitanya Caritamrta----2:1:220----purport).

Śrīla Bhaktivinoda Ṭhākura has sung: nāmāśraya kari' yatane tumi, thākaha āpana kāje. Everyone is thus advised to seek shelter in the chanting of the Hare Kṛṣṇa mahā-mantra and remain engaged in his own occupational duty. There is no loss in this, and the gain is tremendous. Even from a material point of view, everyone should take to chanting the Hare Kṛṣṇa mantra to be saved from all kinds of danger. This world is full of danger (padaṁ padaṁ yad vipadām (S.B.10:14:58). Therefore we should be encouraged to chant the Hare Kṛṣṇa mahā-mantra so that in our family, society, neighborhood and nation, everything will be smooth and free from danger.
(Srimad Bhagavatam----10:6:3----purport).

There is a song sung by Śrīla Bhaktivinoda Ṭhākura:
enechi auṣadhi māyā nāśibāra lāgi'
harināma-mahāmantra lao tumi māgi'
bhakativinoda prabhu-caraṇe paḍiyā
sei harināma-mantra la-ila māgiyā
The saṅkīrtana movement has been introduced by Lord Caitanya Mahāprabhu just to dispel the illusion of māyā, by which everyone in this material world thinks himself to be a product of matter and therefore to have many duties pertaining to the body. Actually, the living entity is not his material body: he is a spirit soul. He has a spiritual need to be eternally blissful and full of knowledge, but unfortunately he identifies himself with the body, sometimes as a human being, sometimes as an animal, sometimes a tree, sometimes an aquatic, sometimes a demigod, and so on. Thus with each change of body he develops a different type of consciousness with different types of activities and thus becomes increasingly entangled in material existence, transmigrating perpetually from one body to another. Under the spell of māyā, or illusion, he does not consider the past or future but is simply satisfied with the short life span that he has gotten for the present. To eradicate this illusion, Śrī Caitanya Mahāprabhu has brought the saṅkīrtana movement, and He requests everyone to accept and distribute it. A person who is actually a follower of Śrīla Bhaktivinoda Ṭhākura must immediately accept the request of Lord Caitanya Mahāprabhu by offering respectful obeisances unto His lotus feet and thus beg from Him the Hare Kṛṣṇa mahā-mantra. If one is fortunate enough to beg from the Lord this Hare Kṛṣṇa mahā-mantra, his life is successful.
(Sri Caitanya Caritamrta----1:9:36----purport).

Śrīla Bhaktivinoda Ṭhākura has sung, kṛṣṇa se tomāra, kṛṣṇa dite pāra, tomāra śakati āche. In this song, Bhaktivinoda Ṭhākura describes that a pure Vaiṣṇava, as the proprietor of Kṛṣṇa and love of Kṛṣṇa, can deliver both to anyone and everyone he likes. Therefore to get Kṛṣṇa and love of Kṛṣṇa one must seek the mercy of pure devotees. Śrīla Viśvanātha Cakravartī Ṭhākura also says, yasya prasādād bhagavat-prasādo yasyāprasādān na gatiḥ kuto ’pi: ** "By the mercy of the spiritual master one is blessed by the mercy of Kṛṣṇa. Without the grace of the spiritual master one cannot make any advancement." By the grace of a Vaiṣṇava or bona fide spiritual master one can get both love of Godhead, Kṛṣṇa, and Kṛṣṇa Himself.
(Sri Caitanya Caritamrta----1:11:59----purport).

In his Amṛta-pravāha-bhāṣya, Śrīla Bhaktivinoda Ṭhākura explains that this spiritual potency is the essence of the pleasure potency and the knowledge potency. By these two potencies, one is empowered with devotional service. Lord Kṛṣṇa Himself or His representative, the unalloyed devotee, can mercifully bestow these combined potencies upon any man. Being thus endowed with such potencies, one can become an unalloyed devotee of the Lord. Anyone favored by Lord Śrī Caitanya Mahāprabhu was empowered with this bhakti-śakti. Thus the Lord's followers were able to preach Kṛṣṇa consciousness by divine grace.
(Sri Caitanya Caritamrta----2:7:99----purport).

In his Amṛta-pravāha-bhāṣya, Śrīla Bhaktivinoda Ṭhākura states, “Śrīmatī Rādhārāṇī is the creeper of love of Godhead, and the gopīs are exactly like twigs, flowers and leaves. When water is sprinkled on the creeper, the twigs, flowers and leaves indirectly receive all the benefits of the creeper itself. But water sprinkled directly on the twigs, leaves and flowers is not as effective as water sprinkled on the creeper's root. The gopīs are not as pleased when they directly mix with Kṛṣṇa as when they serve to unite Śrīmatī Rādhārāṇī with Kṛṣṇa. Their transcendental pleasure lies in uniting Them.”
(Sri Caitanya Caritamrta----2:8:210----purport).

Śrīla Bhaktivinoda Ṭhākura summarizes this growth of love of Godhead as a gradual process. A person becomes interested in devotional service by some good fortune. Eventually he becomes interested in pure devotional service without material contamination. At that point, a person wants to associate with devotees. As a result of this association, he becomes more and more interested in discharging devotional service and hearing and chanting. The more one is interested in hearing and chanting, the more he is purified of material contamination. Liberation from material contamination is called anartha-nivṛtti, indicating a diminishing of all unwanted things. This is the test of development in devotional service. If one actually develops the devotional attitude, he must be freed from the material contamination of illicit sex, intoxication, gambling and meat-eating. These are the preliminary symptoms. When one is freed from all material contamination, his firm faith in devotional service awakens. When firm faith develops, a taste arises, and by that taste one becomes attached to devotional service. When this attachment intensifies, the seed of love of Kṛṣṇa fructifies. This position is called prīti or rati (affection) or bhāva (emotion). When rati intensifies, it is called love of Godhead. This love of Godhead is actually life's highest perfection and the reservoir of all pleasure.
(Sri Caitanya Caritamrta----2:23:13----purport).

When a touchstone touches iron, it turns the iron to gold. Parvata Muni called Nārada Muni a touchstone because by his touch the hunter, who was the lowest among men, became an elevated and perfect Vaiṣṇava. Śrīla Bhaktivinoda Ṭhākura said that the position of a Vaiṣṇava can be tested by seeing how good a touchstone he is—that is, by seeing how many Vaiṣṇavas he has made during his life. A Vaiṣṇava should be a touchstone so that he can convert others to Vaiṣṇavism by his preaching, even though people may be fallen like the hunter. There are many so-called advanced devotees who sit in a secluded place for their personal benefit. They do not go out to preach and convert others into Vaiṣṇavas, and therefore they certainly cannot be called sparśa-maṇi, advanced devotees. Kaniṣṭha-adhikārī devotees cannot turn others into Vaiṣṇavas, but a madhyama-adhikārī Vaiṣṇava can do so by preaching. Śrī Caitanya Mahāprabhu advised His followers to increase the numbers of Vaiṣṇavas.
(Sri Caitanya Caritamrta----2:24:277----purport).

Śrīla Bhaktivinoda Ṭhākura remarks that after one adopts the renounced order and accepts the dress of either a sannyāsī or a bābājī, if he entertains the idea of sense gratification, especially in relationship with a woman, the only atonement is to commit suicide at the confluence of the Ganges and Yamunā. Only by such atonement can his sinful life be purified. If such a person is thus punished, it is possible for him to attain the shelter of Śrī Caitanya Mahāprabhu. Without such punishment, however, the shelter of Śrī Caitanya Mahāprabhu is very difficult to regain.
(Sri Caitanya Caritamrta----3:2:166----purport).