In the Bhagavad-gita , the Lord says that bhaktya mam abhijanati. Bhaktya mam abhijanati, tattvatah, yavan yas casmi tattvatah [Bg. 18.55].
In another place the Lord says that "To understand Me, actually what I am, is very difficult." Manusyanam sahasresu kascid yatati siddhaye: [Bg. 7.3]
"Out of many millions of human beings, somebody tries to make a perfection of his life." Otherwise they are all working like cats and dogs, that's all, simply ahara-nidra-bhaya-maithunam ca. They have no other information. "Work hard, eat, be merry and enjoy, and have mating, that's all." So out of millions and millions of persons like this, engaged in animal propensities of life, only a few persons, selected person... Because the illusory energy has grasped us under her clutches very tightly, to get out of the clutches is very difficult.
So somehow or other, a few people, out of many millions and thousands, they come to the understanding that what is the real perfection of life. Now, those who are actually perfected, out of them, out of millions of them, one can understand Krsna.
>>> Ref. VedaBase => Sri Caitanya-caritamrta, Madhya-lila 20.97-99 -- New York, November 22, 1966
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