(Prabhupada's lecture - Śrīmad-Bhāgavatam 1.16.16 - Los Angeles, January 11, 1974)
So God's creation is like that. You cannot by force enter into any atmosphere unless you become fit to live there. That is God's creation. By force you cannot live within water. By force the fish cannot live on the land. You'll die. Similarly, by force you cannot enter into the moon planet. Therefore they are frustrated. It is not possible. Similarly, without being Kṛṣṇized, you cannot understand what is Kṛṣṇa, you cannot associate with Him. That is the process of Kṛṣṇa consciousness, to become perfectly Kṛṣṇa-ite, as good as Kṛṣṇa. That is purification process. Sarvopādhi-vinirmuktaṁ tat-paratvena nirmalam [Cc. Madhya 19.170]. Nirmalam. Nirmalam means purification. Now we are sa-malam. We have got so many dirty things with us. So one has to become nirmalam. Sarvopādhi-vinirmuktam. First business is to become free from the designation. If you think yourself that "I am American," "I am Christian," "I am Hindu," "I am Indian," "I am black," "I am white," these are all designation. So sarvopādhi-vinirmuktam, when you become transcendental to all designation, when you come to the platform to understand that "I am not this body; I am spirit soul," brahma-bhūtaḥ prasannātmā [Bg. 18.54], then you become happy.
So long we are with designations, we are not happy. To become designationless means feeling complete happiness. That is the test. If you simply artificially say that "I am not identifying with this body," that is fact. But real identification with..., identification with the body will be realized when you don't feel pains and pleasure. Sarvopādhi-vinirmuktaṁ tat-paratvena nirmalam, hṛṣīkeṇa. When your senses will be purified in that way, without any designation, then you can begin devotional service.