The religious practice for the Age of Kali is to broadcast the glories of the holy name. Only for this purpose has the Lord, in a yellow color, descended as Lord Caitanya.

In this Age of Kali the practical system of religion for everyone is the chanting of the name of Godhead. This was introduced in this age by Lord Caitanya. Bhakti-yoga actually begins with the chanting of the holy name, as confirmed by Madhvācārya in his commentary on the Muṇḍaka Upaniṣad. He quotes this verse from the Nārāyaṇa-saṁhitā:

"In the Dvāpara-yuga people should worship Lord Viṣṇu only by the regulative principles of the Nārada-pañcarātra and other such authorized books. In the Age of Kali, however, people should simply chant the holy names of the Supreme Personality of Godhead."
Cc. Adi 3.40

- The Śrīmad-Bhāgavatam advocates nama-sankirtana as the essence of religion in the age of Kali.

In Śrīmad-Bhāgavatam it is repeatedly and clearly said that the essence of religion in the Age of Kali is the chanting of the holy name of Kṛṣṇa.
Cc. Adi 3.50

- Rather than inventing one's religious process, one should accept the approved method of religion for this age-hari-nama-sankirtana: (Sārvabhauma Bhaṭṭācārya to King Prataparudra): Sārvabhauma Bhaṭṭācārya replied, "This sweet transcendental sound is a special creation of the Lord known as prema-saṅkīrtana, congregational chanting in love of Godhead. "In this Age of Kali, Śrī Caitanya Mahāprabhu has descended to preach the religion of Kṛṣṇa consciousness. Therefore the chanting of the holy names of Lord Kṛṣṇa is the religious principle for this age. "Anyone who worships Lord Caitanya Mahāprabhu by congregational chanting should be understood to be very intelligent. One who does not do so must be considered a victim of this age and bereft of all intelligence. "

Rascals propose that anyone can invent his own religious process, and this proposition is condemned herein. If one actually wants to become religious, he must take up the chanting of the Hare Kṛṣṇa mahā-mantra... dharma, or religion, cannot be manufactured by a human being. Religion is the law or code of the Lord... dharma refers to the science of bhakti-yoga, which begins by the novice's chanting the holy name of the Lord (tan-nāma-grahaṇādibhiḥ).

Therefore in this Age of Kali, as recommended here in the Caitanya-caritāmṛta kali-kāle dharma-kṛṣṇa-nāma-saṅkīrtana: the chanting of the holy name of the Lord is the method of religion approved by all Vedic scriptures.
Cc. Madhya 11.97-99