PURPORT

Unless delivered or blessed by a devotee, one cannot realize that Krsna is the Supreme Personality of Godhead. Manusyanam sahasresu kascid yatati siddhaye. According to this verse of Bhagavad-gita (7.3), there are so many siddhas or yogis who cannot understand Krsna; instead, they misunderstand Him. But if one takes shelter of a devotee descending from the parampara system of Narada (svayambhur naradah sambhuh), one can then understand who is an incarnation of the Supreme Personality of Godhead. In this age, many pseudo incarnations are advertised simply for having exhibited some magical performances, but except for persons who are servants of Narada and other servants of Krsna, no one can understand who is God and who is not. This is confirmed by Narottama dasa Thakura. Chadiya vaisnava-seva nistara payeche keba: no one is delivered from the material conception of life unless favored by a Vaisnava. Others can never understand, neither by speculation nor by any other bodily or mental gymnastics.