PURPORT

As stated in Caitanya-caritamrta (Antya 7.11):

kali-kalera dharma-krsna-nama-saṅkirtana
krsna-sakti vina nahe tara pravartana

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. Persons who do so are empowered. Therefore they are sometimes called avesa-avataras or incarnations, for they are endowed with the power of Sri Caitanya Mahaprabhu.

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