There should not be any motive. That is, you should be very careful. Anyābhilāṣitā-śūnyam (Bhakti-rasāmṛta-sindhu 1.1.11), no motive. Bhakti, bhaja-dhātu, simply pure desire, "How I shall serve Kṛṣṇa?" Then he is mukta. Immediately he is liberated. One who has this fixed-up mind, that "How I shall render service to Kṛṣṇa?" and if he tries his best, then he becomes immediately mukta unless he changes his decision. That is . . . every time is possible. Even one is mukta, liberated, he can be also fallen down unless he is very strong in his determination. Māyā is always there. Daivī hy eṣā guṇamayī mama māyā duratyayā (BG 7.14). But if one is determined that "I shall stick to the service of Kṛṣṇa," māyā will not touch. That is kevalā bhakti. If sometimes it appears that he has deviated out of past habit, that is excused. Api cet sudurācāro bhajate mām ananya-bhāk, sādhur eva sa mantavyaḥ (BG 9.30). But not intentional. We should not fall down and deviate from our path of devotional service intentionally. That will not . . . that is very great criminality. We must try our best, kevalayā bhaktyā.
So kecit. Kecit means this determination is very difficult. Therefore it has been said here kecit, "somebody," not all. Not all can get that determination. But everyone can get determination, provided he likes. It is not determination is monopolized by a certain man. Anyone who determines that "I shall simply serve Kṛṣṇa," that simple determination will save him. Kevalayā bhaktyā. And kecit kevalayā bhaktyā vāsudeva-parāyaṇāḥ (SB 6.1.15). Bhaktyā, bhakti, devotion, to whom? Vāsudeva. Vāsudevaḥ sarvam iti sa mahātmā sudurlabhaḥ (BG 7.19). If one determines that "Vāsudeva is everything . . ." Actually, Kṛṣṇa is everything. Mayā tatam idaṁ sarvaṁ jagat avyakta-mūrtinā (BG 9.4). In everywhere. Īśāvāsyam idaṁ sarvam yat kiñcid jagatyāṁ jagat (ISO 1). Everywhere there is Kṛṣṇa's relationship, because without Kṛṣṇa, nothing exists. Mayā tatam idaṁ sarvaṁ jagat avyaktya, mat-sthani sarva-bhūtāni (BG 9.4). Everything is resting on Kṛṣṇa. Īśāvāsyam idaṁ sarvam. This is Kṛṣṇa conscious. Without Kṛṣṇa . . . so that is the fact. But when you come to this understanding, then you become perfectly Kṛṣṇa conscious. Without Kṛṣṇa, nothing can exist.
So vāsudeva-parāyaṇā-agham. Agham means sin, sinful reaction of life. Dhunvanti, "one washes." Just like dirty thing, if you bring bucket of water and wash it, then everything cleansed immediately. So this process of chanting is so nice that ceto-darpaṇa-mārjanam (CC Antya 20.12). It cleanses the heart, misunderstanding that "I am this body. I belong to this nation. I belong to this community. I belong to this religion." No. "I belong to Kṛṣṇa," that's all. This is ceto-darpaṇa-mārjanam. Jīvera svarūpa haya nitya kṛṣṇa dāsa (CC Madhya 20.108). That is real knowledge, real perfection, as soon as one comes to this conclusion, that "Kṛṣṇa is mine, and I am Kṛṣṇa's," simply this understanding. Ceto-darpaṇa-mārjanam. So by this consciousness automatically all reaction of sinful life becomes washed.