Appreciating bhakti-mārga as instructed by Śrī Caitanya Mahāprabhu, Sārvabhauma Bhaṭṭācārya thus depicted the activities of Śrī Caitanya Mahāprabhu:
vairāgya-vidyā-nija-bhakti-yoga-
śikṣārtham ekaḥ puruṣaḥ purāṇaḥ
śrī-kṛṣṇa-caitanya-śarīra-dhārī
kṛpāmbudhir yas tam ahaṁ prapadye
[Cc. Madhya 6.254]
"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.
(Srimad Bhagavatam------8:1:16------purport).

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.
(Sri Catanya Caritamrta-------2:6:254------translation).

I offer my respectful obeisances unto Lord Śrī Caitanya Mahāprabhu. He is an ocean of transcendental mercy, and although the subject matter of bhakti-yoga is very confidential, He has nonetheless manifested it so nicely, even in this Age of Kali, the age of quarrel.
(Sri Catanya Caritamrta-------2:22:1------translation).