Preaching is the duty of sannyasis

Preaching is the Service that pleases Lord the most. 

For one who explains the supreme secret to the devotees, devotional service is guaranteed, and at the end he will come back to Me. Bg 18.68

But we have distinctions for the proper functioning of the society, Varnasrama dharma. If everyone wants to engage only in preaching Service then who is there to take up other services?  all other services requires to be rendered for Krsna. In order to build a organized society, we need to introduce VAD. 

Different persons have different priorities in devotional service. 

Srila Prabhupada explains that  For paramahaṁsas, or sannyāsīs in the Vaiṣṇava order, preaching is the first duty. 

Srimad Bhagavatam 7.13.9 

For a brahmacari, the first duty is to serve the Spiritual master and learn the vedic knowledge. 

For a Grhastha, maintaining family, charity, producing children, deity worship, yajna 

For a vanaprastha, austerities and penances 

For a woman, Service to her husband.

The first priority should be given to alloted duties in Krsna Consciousness. Then preaching. Grhastha can preach to their family and relatives,surroundings if they have time after fulfilling their dharma. Similarly a woman can preach as time permits after the prescribed duties. 

Modern society is chaos because of disregarding divisions. We should avoid such topsy turvy in Spiritual society. If a devotee wants to preach full time, he better situates himself in brahmacari ashrama. Recent times, we have seen husband fully engages in preaching while sending his wife to work outside to maintain the family. Srila Prabhupada never encouraged women to work outside. For a woman, away from home always have the chance of being polluted.  It's a man's duty to maintain and provide for the family, if he decides to full time devotional Service his family members should accept the bare needs of life supported by temple. 

Krsna ordered Prahlada Maharaja, Yudhistira Maharaja, etc, to rule the citizens in accordance with religious principles. He didn't encourage Yudhistira Maharaja to preach like a sannyasi, even though pure devotee Yudhistira Maharaja as a matter of duty and humility and to teach us the standards, inquires from Narada muni about devotional Service. 

Women should be concentrating on their sva dharma. A woman should not imitate sannyasi dharma. 

According to the Vedic way of civilization, one should leave his family after attaining fifty years of age and go to the forest of Vṛndāvana to devote the rest of his life to the service of the Lord.

Caitanya Mahaprabhu instructed every one can preach Krsna upadesh, and to become Guru, 

The Lord instructs whomever you meet , speak about Krsna and repeat the instructions of Krsna. 

Sannyasis only duty is to preach Krsna Consciousness. That is their life and soul. 

In that village there was a Vedic Brahmin named Kurma. He respectfully invited Lord Chaitanya Mahaprabhu to his home. He washed the Lord’s lotus feet and drank the water with his family members. With great affection and respect, he gave Mahaprabhu all kinds of food to eat. After that, all the members of the family shared His remnants. (Chaitanya Charitamrita 2.7.121-3)

 

   The Brahmin glorified Mahaprabhu, pleasing Him, but as the Lord left he was unable to bear the thought of being separated from Him. He asked the Lord for permission to accompany Him, but the Lord denied it, telling him to stay at home and chant the names of Krishna and then to take the role of an acharya and preach the Holy Names to others.

 

   The Lord said, "Never make such a suggestion again. You should rather remain at home and constantly chant the Holy Name of Krishna. Instruct whomever you see in the religion of Krishna. Become a spiritual master on my order and deliver everyone in this land. Do this and you will never again be entangled in the waves of materialistic life. Indeed, you will have My company again, here in this very place." (Chaitanya Charitamrita 2.7.127-9)

 

   Shrila Bhaktisiddhanta Saraswati Goswami Thakur has elaborated on this instruction to Kurma Vipra in his Anubhashya as follows: "For those who are determined to abandon everything to take shelter of the Supreme Lord Shri Chaitanya Mahaprabhu and serve Him exclusively, the Lord here gives the instruction to remain in the home, i.e., to give up the pride of being a heroic performer of bhajana and to adopt a regular practice of chanting the Holy Name of Krishna in the home and, with the humility which is characterized by remaining in the householder life, instruct others in chanting the Holy Names. If one takes up the duties of a spiritual master in this way, he will never become entangled in the "waves of materialistic life" in the form of the desire for self-aggrandizement. Many foolish people think that it is an impediment to spiritual practice to teach through writing books as Rupa Goswami, Sanatan Goswami, Jiva Goswami or Raghunath Das Goswami have done, or by taking on large numbers of disciples like Madhvacharya, Ramanujacharya or Narottama Das Thakur. Indeed, these less intelligent persons even claim that such activities are material entanglements. By adhering to these erroneous ideas, they become offenders to many unalloyed Devotees who have nothing to do with the material world. This teaching of the Lord is intended for these people, who, if they analyze it carefully, will come to give up their false pride in a show of humility and, rather than demonstrating a vengeful attitude towards those who are devoid of a devotional attitude to the Lord, advance the cause of genuine bhajana."

 

[Excerpted from “Shri Chaitanya: His Life & Associates” by Shrila Bhakti Ballabh Tirtha Maharaj] 

CC Madhya 7.130, Translation and Purport

At whosever house Śrī Caitanya accepted His alms by taking prasādam, He would convert the dwellers to His saṅkīrtana movement and advise them just as He advised the brāhmaṇa named Kūrma.

The cult of Śrī Caitanya Mahāprabhu is explained here very nicely. One who surrenders to Him and is ready to follow Him with heart and soul does not need to change his location. Nor is it necessary for one to change his status. One may remain a householder, a medical practitioner, an engineer or whatever. It doesn’t matter. One only has to follow the instruction of Śrī Caitanya Mahāprabhu, chant the Hare Kṛṣṇa mahā-mantra and instruct relatives and friends in the teachings of the Bhagavad-gītā and Śrīmad-Bhāgavatam. One has to learn humility and meekness at home, following the instructions of Śrī Caitanya Mahāprabhu, and in that way one’s life will be spiritually successful. One should not try to be an artificially advanced devotee, thinking, “I am a first-class devotee.” Such thinking should be avoided. It is best not to accept any disciples. One has to become purified at home by chanting the Hare Kṛṣṇa mahā-mantra and preaching the principles enunciated by Śrī Caitanya Mahāprabhu. Thus one can become a spiritual master and be freed from the contamination of material life.

There are many sahajiyās who decry the activities of the six Gosvāmīs—Śrīla Rūpa, Sanātana, Raghunātha dāsa, Bhaṭṭa Raghunātha, Jīva and Gopāla Bhaṭṭa Gosvāmīs—who are the personal associates of Śrī Caitanya Mahāprabhu and who enlightened society by writing books on devotional service. Similarly, Narottama dāsa Ṭhākura and other great ācāryas like Madhvācārya, Rāmānujācārya and others accepted many thousands of disciples to induce them to render devotional service. However, there is a class of sahajiyās who think that these activities are opposed to the principles of devotional service. Indeed, they consider such activities simply another phase of materialism. Thus opposing the principles of Śrī Caitanya Mahāprabhu, they commit offenses at His lotus feet. They should better consider His instructions and, instead of seeking to be considered humble and meek, should refrain from criticizing the followers of Śrī Caitanya Mahāprabhu who engage in preaching. To protect His preachers, Śrī Caitanya Mahāprabhu has given much clear advice in these verses of Śrī Caitanya-caritāmṛta.

CC Madhya 7.127

Śrī Caitanya Mahāprabhu replied, “Don’t speak like that again. Better to remain at home and chant the holy name of Kṛṣṇa always.

PURPORT

It is not advisable in this Age of Kali to leave one’s family suddenly, for people are not trained as proper brahmacārīs and gṛhasthas. Therefore Śrī Caitanya Mahāprabhu advised the brāhmaṇa not to be too eager to give up family life. It would be better to remain with his family and try to become purified by chanting the Hare Kṛṣṇa mahā-mantra regularly under the direction of a spiritual master. This is the instruction of Śrī Caitanya Mahāprabhu. If this principle is followed by everyone, there is no need to accept sannyāsa. In the next verse Śrī Caitanya Mahāprabhu advises everyone to become an ideal householder by offenselessly chanting the Hare Kṛṣṇa mantra and teaching the same principle to everyone he meets.

yāre dekha, tāre kaha ‘kṛṣṇa’-upadeśa

āmāra ājñāya guru hañā tāra’ ei deśa

Instruct everyone to follow the orders of Lord Śrī Kṛṣṇa as they are given in the Bhagavad-gītā and Śrīmad-Bhāgavatam. In this way become a spiritual master and try to liberate everyone in this land.”

PURPORT

This is the sublime mission of the International Society for Krishna Consciousness. Many people come and inquire whether they have to give up family life to join the Society, but that is not our mission. One can remain comfortably in his residence. We simply request everyone to chant the mahā-mantra: Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare. If one is a little literate and can read Bhagavad-gītā As It Is and Śrīmad-Bhāgavatam, that is so much the better. These works are now available in an English translation and are done very authoritatively to appeal to all classes of men. Instead of living engrossed in material activities, people throughout the world should take advantage of this movement and chant the Hare Kṛṣṇa mahā-mantra at home with their families. One should also refrain from sinful activities—illicit sex, meat-eating, gambling and intoxication. Out of these four items, illicit sex is very sinful. Every person must get married. Every woman especially must get married. If the women outnumber the men, some men can accept more than one wife. In that way there will be no prostitution in society. If men can marry more than one wife, illicit sex life will be stopped. One can also produce many nice preparations to offer Kṛṣṇa—grain, fruit, flowers and milk. Why should one indulge in unnecessary meat-eating and maintain horrible slaughterhouses? What is the use of smoking and drinking tea and coffee? People are already intoxicated by material enjoyment, and if they indulge in further intoxication, what chance is there for self-realization? Similarly, one should not partake in gambling and unnecessarily agitate the mind. The real purpose of human life is to attain the spiritual platform and return to Godhead. That is the summum bonum of spiritual realization. The Kṛṣṇa consciousness movement is trying to elevate human society to the perfection of life by pursuing the method described by Śrī Caitanya Mahāprabhu in His advice to the brāhmaṇa Kūrma. That is, one should stay at home, chant the Hare Kṛṣṇa mantra and preach the instructions of Kṛṣṇa as they are given in the Bhagavad-gītā and Śrīmad-Bhāgavatam.

Cc Madhya 7.128

Śrī Caitanya Mahāprabhu further advised the brāhmaṇa Kūrma, “If you follow this instruction, your materialistic life at home will not obstruct your spiritual advancement. Indeed, if you follow these regulative principles, we will again meet here, or, rather, you will never lose My company.”

PURPORT

This is an opportunity for everyone. If one simply follows the instructions of Śrī Caitanya Mahāprabhu, under the guidance of His representative, and chants the Hare Kṛṣṇa mantra, teaching everyone as far as possible the same principle, the contamination of the materialistic way of life will not even touch him. It does not matter whether one lives in a holy place like Vṛndāvana, Navadvīpa or Jagannātha Purī or in the midst of European cities, where the materialistic way of life is very prominent. If a devotee follows the instructions of Śrī Caitanya Mahāprabhu, he lives in the company of the Lord. Wherever he lives, he converts that place into Vṛndāvana and Navadvīpa. This means that materialism cannot touch him. This is the secret of success for one advancing in Kṛṣṇa consciousness. 

Caitanya caritamrta Madhya 7.129

While on His tour, Śrī Caitanya Mahāprabhu would spend the night at a temple or on the roadside. Whenever He accepted food from a person, He would give him the same advice He gave the brāhmaṇa named Kūrma. He adopted this process until He returned to Jagannātha Purī from His South Indian tour.

Cc Madhya lila 7.130