atah sri krsna-namadi na bhaved grahyam indriyaih
sevonmukhe hi jivadau svayam eva spuraty adah
"No one can understand Krsna as He is by the blunt material senses. But He reveals Himself to the devotees, being pleased with them for their transcendental loving service unto Him."
(Padma Purana cited in Bhagavad-gita As It Is, 7.3, Purport)
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