So out of many millions of these religious person, some of them know what he is: "I am not this body." Now, simply theoretically knowing that "I am not this body; I am spirit soul," that is not perfect. You have to actually become liberated from the material entanglement. That is called mukti, liberation. So out of many thousands of persons who are in the knowledge what they are or what he is, some of them are actually liberated. Liberated. And out of many thousands of people who are liberated, they can understand what is Kṛṣṇa
Srila Prabhupada's lecture on
Bhagavad-gītā 9.2, Nov. 11, 1966, New York