The devotees of Lord Caitanya must preach Kṛṣṇa consciousness in every village and town in the world. That will satisfy the Lord. It is not that one should act whimsically for his own personal satisfaction. This order comes down through the paramparā system, and the spiritual master presents these orders to the disciple so that he can spread the message of Śrī Caitanya Mahāprabhu. It is the duty of every disciple to carry out the order of the bona fide spiritual master and spread Lord Caitanya's message all over the world.
(Sri Caitanya Caritamrta------2:16:64-------purport).

If a person is religious, he must accept the supreme authority of the Lord, become His devotee and try to love Him. This is the real principle of religion. It does not matter whether one is Christian, Muslim or whatever. He simply must accept the sublime position of the Supreme Personality of Godhead and render service unto Him. It is not a question of being Christian, Muslim or Hindu. One should be purely religious and freed from all these material designations. In this way one can learn the art of devotional service. This argument appeals to all intelligent men, and consequently the Kṛṣṇa consciousness movement is gaining ground throughout the world. Due to our solid logic and scientific presentation, Śrī Caitanya Mahāprabhu's prediction that Kṛṣṇa consciousness will spread to every town and village throughout the world is gradually being realized.
(Sri Caitanya Caritamrta------2:25:20-------purport).

"All Indians should seriously take up the cult of Śrī Caitanya Mahāprabhu and should perfect their lives by adopting the process of devotional service. After perfecting their lives, they should broadcast this message all over the world for the welfare of all human beings (para-upakāra)." (CC.1:9:41) A Vaiṣṇava is especially interested in para-upakāra, doing good to others. Prahlāda Mahārāja was also interested in this. He did not want to be delivered alone; rather, he wanted to deliver all fallen souls, who are bereft of knowledge of bhakti and who misuse their intelligence for the temporary benefit of the material body. Śrī Caitanya Mahāprabhu also wanted His mission spread all over the world.
pṛthivīte āche yata nagarādi grāma
sarvatra pracāra haibe mora nāma
"In every town and village, the chanting of My name will be heard."
(Sri Caitanya Caritamrta------2:25:264-------purport).

"One should worship the Supreme Personality of Godhead who appears in this Age of Kali with His associates as the Pañca-tattva: the Lord Himself and His associates Nityānanda Prabhu, Śrī Advaita Prabhu, Śrī Gadādhara Prabhu and Śrīvāsa Ṭhākura. In this age an intelligent person worships the Pañca-tattva by the method of chanting the Hare Kṛṣṇa mahā-mantra and, if possible, distributing prasādam." Our Kṛṣṇa consciousness movement is introducing this bona fide method of worship in the Western world. Its members are going from village to village and town to town with Deities of Lord Caitanya Mahāprabhu, teaching people how to worship the Lord by chanting the Hare Kṛṣṇa mantra, offering prasādam and distributing prasādam to people in general.
(Sri Caitanya Caritamrta------1:14:51-------purport).

By the regular performance of yajña, the equal distribution of wealth and the restriction of sense gratification, the entire world will be made peaceful and prosperous. As already mentioned, in this age of Kali the simple performance of saṅkīrtana-yajña—the holding of festivals as initiated by the International Society for Krishna Consciousness—should be introduced in every town and village. Intelligent men should encourage the performance of saṅkīrtana-yajña by their personal behavior. This means that they should follow the process of austerity by restricting themselves from illicit sex life, meat-eating, gambling and intoxication. If the intelligent men, or the brāhmaṇas of society, would follow the rules and regulations, certainly the entire face of this present world, which is in such chaotic condition, would change, and people would be happy and prosperous.
(Srimad Bhagavatam------4:18:13-------purport).

The Lord says that He incarnates Himself in every millennium. This indicates that He incarnates also in the Age of Kali. As stated in the Śrīmad-Bhāgavatam, the incarnation in the Age of Kali is Lord Caitanya Mahāprabhu, who spread the worship of Kṛṣṇa by the saṅkīrtana movement (congregational chanting of the holy names) and spread Kṛṣṇa consciousness throughout India. He predicted that this culture of saṅkīrtana would be broadcast all over the world, from town to town and village to village. Lord Caitanya as the incarnation of Kṛṣṇa, the Personality of Godhead, is described secretly but not directly in the confidential parts of the revealed scriptures, such as the Upaniṣads, Mahābhārata and Bhāgavatam. The devotees of Lord Kṛṣṇa are very much attracted by the saṅkīrtana movement of Lord Caitanya. This avatāra of the Lord does not kill the miscreants, but delivers them by His causeless mercy.
(Bhagavad-Gita------4:8-------purport).

Man's activities in agriculture, mining, farming, industries, gardening, etc., were all on the same scale as they are now, even previous to the present creation, and the same activities will remain as they are, even in the next creation. After many hundreds of millions of years, one creation is started by the law of nature, and the history of the universe repeats itself practically in the same way. The mundane wranglers waste time with archaeological excavations without searching into the vital necessities of life. After getting an impetus in spiritual life, Śrī Nārada Muni, even though a mere child, did not waste time for a single moment with economic development, although he passed towns and villages, mines and industries. He continually went on to progressive spiritual emancipation. Śrīmad-Bhāgavatam is the repetition of history which happened some hundreds of millions of years ago. As it was said hereinbefore, only the most important factors of history are picked up to be recorded in this transcendental literature.
(Srimad Bhagavatam------1:6:11-------purport).

When Lord Viṣṇu appeared in the great arena of sacrifice at the time when King Pṛthu was performing a great sacrifice (aśvamedha), He predicted that the Kumāras would very soon come and advise the King. Therefore Pṛthu Mahārāja remembered the causeless mercy of the Lord and thus welcomed the arrival of the Kumāras, who were fulfilling the Lord's prediction. In other words, when the Lord makes a prediction, He fulfills that prediction through some of His devotees. Similarly, Lord Caitanya Mahāprabhu predicted that both His glorious names and the Hare Kṛṣṇa mahā-mantra would be broadcast in all the towns and villages of the world. Śrīla Bhaktivinoda Ṭhākura and Śrīla Bhaktisiddhānta Sarasvatī Prabhupāda desired to fulfill this great prediction, and we are following in their footsteps.
(Srimad Bhagavatam------4:22:42-------purport).