If you perform real saṅkīrtana, prema-nāma-saṅkīrtana, not ordinary name, then all sinful reactions of Kali-yuga will be completely destroyed. Then citta-śuddhi, the heart will be purified, sarva-bhakti-sādhana-udgama, then you will develop pure kṛṣṇa-bhakti. Then kṛṣṇa-premodgama, love of Kṛṣṇa will arise and you will relish premāmṛta-āsvādana, the nectar of loving mellow emanating from the holy name. If you can do real kṛṣṇa-saṅkīrtana then kṛṣṇa-prāpti, sevāmṛta-samudre majjana, you will get Kṛṣṇa and you will drown yourself in that ocean of prema. Mahāprabhu was teaching this.