So Kṛṣṇa consciousness, although it is very difficult, by the mercy of Lord Caitanya it has become easily available. And Caitanya Mahāprabhu has recommended, paraṁ vijayate śrī-kṛṣṇa-saṅkīrtanam. He has recommended śrī-kṛṣṇa-saṅkīrtana. Although He is Kṛṣṇa Himself, His word is sufficient, still, whatever He said, He gave reference to the śāstra. Otherwise it is not, I mean to say, authority. That is recommended in the Śrīmad-Bhāgavatam. Kīrtanād eva kṛṣṇasya mukta-saṅgaḥ paraṁ vrajet (SB 12.3.51). These are the recommendation.
Caitanya Mahāprabhu, whatever He has given us, not whimsically, according to the regulation of the śāstra. And if we follow the footprints of Caitanya Mahāprabhu, then Kṛṣṇa consciousness will be very easily understandable. And Caitanya Mahāprabhu has recommended, yāre dekha tāre kaha kṛṣṇa-upadeśa (CC Madhya 7.128).
This is the Kṛṣṇa consciousness movement, that according to the order of Kṛṣṇa, Kṛṣṇa Caitanya Mahāprabhu, we are trying to distribute the words given by Kṛṣṇa, kṛṣṇa-kathā. Kṛṣṇa-kathā means the words given by Kṛṣṇa and the words about Kṛṣṇa. The words given by Kṛṣṇa personally is this Bhagavad-gītā, and words about Kṛṣṇa is Śrīmad-Bhāgavatam.
So this Kṛṣṇa consciousness movement means preaching these two principal Vedic literature throughout the whole world.