nirāśiṣaṁ pūrṇam ananya-coditam
nṝñ śikṣayantaṁ nija-vartma-saṁsthitaṁ
prabhuṁ prapadye ’khila-dharma-bhāvanam
This is the sum and substance of our Kṛṣṇa consciousness movement. We are simply requesting human society to follow in the footsteps of the teacher of Bhagavad-gītā. Follow the instructions of Bhagavad-gītā As It Is, and your life will be successful. That is the summary of the Kṛṣṇa consciousness movement. The organizer of the Kṛṣṇa consciousness movement is teaching everyone how to follow Lord Rāmacandra, how to follow Lord Kṛṣṇa, and how to follow Śrī Caitanya Mahāprabhu. In this material world, we need a leader for a monarchy or good government. Lord Śrī Rāmacandra, by His practical example, showed how to live for the benefit of all human society. He fought with demons like Rāvaṇa, He carried out the orders of His father, and He remained the faithful husband of mother Sītā. Thus there is no comparison to Lord Rāmacandra’s acting as an ideal king. Indeed, people still hanker for rāma-rājya, a government conducted like that of Lord Rāmacandra. Similarly, although Lord Kṛṣṇa is the Supreme Personality of Godhead, He taught His disciple and devotee Arjuna how to lead a life ending in going back home, back to Godhead (tyaktvā dehaṁ punar janma naiti mām eti so ’rjuna). All teachings — political, economic, social, religious, cultural and philosophical — are to be found in Bhagavad-gītā. One only has to follow them strictly. The Supreme Personality of Godhead also comes as Lord Caitanya just to play the part of a pure devotee. Thus the Lord teaches us in different ways just to make our lives successful, and Svāyambhuva Manu requests us to follow Him.
Svāyambhuva Manu is the leader of mankind, and he has given a book called Manu-saṁhitā to guide human society. Herein he directs us to follow the Supreme Personality of Godhead in His different incarnations. These incarnations are described in Vedic literature, and Jayadeva Gosvāmī has described ten important incarnations in summary (keśava dhṛta-mīna-śarīra jaya jagad-īśa hare, keśava dhṛta-nara-hari-rūpa jaya jagad-īśa hare, keśava dhṛta-buddha-śarīra jaya jagad-īśa hare, etc.). Svāyambhuva Manu instructs us to follow the instructions of God’s incarnations, especially Kṛṣṇa’s instructions of Bhagavad-gītā As It Is.
Appreciating bhakti-mārga as instructed by Śrī Caitanya Mahāprabhu, Sārvabhauma Bhaṭṭācārya thus depicted the activities of Śrī Caitanya Mahāprabhu:
śikṣārtham ekaḥ puruṣaḥ purāṇaḥ
kṛpāmbudhir yas tam ahaṁ prapadye
“Let me take shelter of the Supreme Personality of Godhead, Śrī Kṛṣṇa, who has descended in the form of Lord Caitanya Mahāprabhu to teach us real knowledge, His devotional service, and detachment from whatever does not foster Kṛṣṇa consciousness. He has descended because He is an ocean of transcendental mercy. Let me surrender unto His lotus feet.” (Caitanya-candrodaya-nāṭaka 6.74) In this Age of Kali, people cannot follow the instructions of the Supreme Personality of Godhead, and therefore the Lord Himself takes the part of Śrī Kṛṣṇa Caitanya to teach personally how to become Kṛṣṇa conscious. He asks everyone to follow Him and to become a guru to deliver the fallen souls of Kali-yuga.
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 Bhagavad-gītā and Śrīmad-Bhāgavatam. In this way become a spiritual master and try to liberate everyone in this land.” (Cc. Madhya 7.128) The coherent purpose of Lord Rāmacandra, Lord Kṛṣṇa and Lord Caitanya Mahāprabhu is to teach human society how to be happy by following the instructions of the Supreme Lord.