Unless one is empowered by the Supreme Personality of Godhead, Sri Caitanya Mahaprabhu, one cannot spread the holy names of the Hare Krsna maha-mantra throughout the world

Expressions researched:
"Unless one is empowered by the Supreme Personality of Godhead, Śrī Caitanya Mahāprabhu, one cannot spread the holy names of the Hare Kṛṣṇa mahā-mantra throughout the world"

Sri Caitanya-caritamrta

CC Antya-lila

Unless one is empowered by the Supreme Personality of Godhead, Śrī Caitanya Mahāprabhu, one cannot spread the holy names of the Hare Kṛṣṇa mahā-mantra throughout the world. Persons who do so are empowered. Therefore they are sometimes called āveśa-avatāras, or empowered incarnations, for they are endowed with the power of Śrī Caitanya Mahāprabhu.

CC Antya 2.14, Translation and Purport

Thus He empowered living beings [His pure devotees] by manifesting in them so much of His own devotion that people in all other countries became devotees by seeing them.

As stated in the Caitanya-caritāmṛta (CC Antya 7.11):

kali-kālera dharma—kṛṣṇa-nāma-saṅkīrtana

kṛṣṇa-śakti vinā nahe tāra pravartana

Unless one is empowered by the Supreme Personality of Godhead, Śrī Caitanya Mahāprabhu, one cannot spread the holy names of the Hare Kṛṣṇa mahā-mantra throughout the world. Persons who do so are empowered. Therefore they are sometimes called āveśa-avatāras, or empowered incarnations, for they are endowed with the power of Śrī Caitanya Mahāprabhu.