Simply if you hear, śravaṇaṁ kīrtanaṁ viṣṇoḥ (SB 7.5.23), you become devotee. Simply by hearing. Sthāne sthitāḥ śruti-gatāṁ tanu-vāṅ-manobhiḥ (SB 10.14.3). You remain in your place. It doesn't matter what you are, but if you simply hear about Kṛṣṇa, then you become devotee. It is so nice. You don't require any education. You don't require any money, don't require anything. You simply hear. That is also confirmed in the Śrīmad-Bhāgavatam:
- śṛṇvatāṁ sva-kathāḥ kṛṣṇaḥ
- puṇya-śravaṇa-kīrtanaḥ
- hṛdy antaḥ-stho hy abhadrāṇi
- vidhunoti suhṛt satām
- (SB 1.2.17)
Suhṛt satām. He is special friend of the devotees. Suhṛt satām. Satām means those who are devotees. Asatām means nondevotee. So He is suhṛt satām. So He is sitting within your heart. Śṛṇvatāṁ sva-kathāḥ kṛṣṇaḥ. So hearing about Kṛṣṇa is so beneficial because as soon as you begin hearing about Kṛṣṇa with little devotion and faith, Kṛṣṇa immediately understands that "This living entity is now serious." Because He is within your heart. So śṛṇvatāṁ sva-kathāḥ kṛṣṇaḥ. "Now this man, this living entity . . ." Especially man.
Cats and dogs cannot hear; that is not possible. They can also hear, but special facility for the human being. So a man can hear. So when Kṛṣṇa sees that you are hearing, śṛṇvatāṁ sva-kathāḥ . . . that hearing itself is puṇya-śravaṇa-kīrtanaḥ. If you simply hear, you'll acquire some pious result. Puṇya-śravaṇa-kīrtanaḥ. And if you chant, you get more pious result. Puṇya-śravaṇa-kīrtanaḥ. The result will be hṛdy antaḥ-stho hy abhadrāṇi. All abhadrāṇi, all mischievous things, will be washed away. Hṛdy antaḥ-stho hy abhadrāṇi vidhunoti. Vidhunoti. Kṛṣṇa helps you to wash it away because He's your friend. He's everyone's friend, but a special friend to the devotees. Suhṛt-satām.
That is also stated in the Śrīmad Bhagavad-gītā. Samo 'haṁ sarva-bhūteṣu na me dveṣyo 'sti na priyaḥ (BG 9.29): "I'm equal to everyone." Otherwise how He can be God? Nobody is His enemy, nobody is His friend. But ye tu bhajanti māṁ bhaktyā: persons who are engaged in devotional service with love and faith, for them special consideration. Special consideration.