Prabhupada's lecture - Śrīmad-Bhāgavatam 1.5.25 - Vṛndāvana, August 6, 1974
So Nārada Muni, he was a small boy. It was not possible for him to study Vedānta or philosophy. He was not even educated. But still, simply by eating the remnants of foodstuff left by the devotees, dvijaiḥ, he became so exalted. The explanation is given there that evaṁ pravṛttasya viśuddha-cetasaḥ. "Because I was engaged in this service, gradually my heart became cleansed." Viśuddha-cetasaḥ. Cetasaḥ means heart. So actually, Kṛṣṇa consciousness is there. As it is stated in the Caitanya-caritāmṛta, nitya-siddha kṛṣṇa-bhakti. Because we are part and parcel of Kṛṣṇa... Just like father and son.
However there may be misunderstanding, but if the father and son come together and their affectionate dealing is begun, immediately original relationship is revived. It does not take much time. Similarly, we are already related with Kṛṣṇa because Kṛṣṇa says, mamaivāṁśo jīva-bhūtaḥ: [Bg. 15.7] "All living entities, they are My part and parcel." Ahaṁ bīja-pradaḥ pitā: [Bg. 14.4] "I am the seed-giving father." So how this relation can be broken? That is not possible. That is already there eternally.