So this is also recommended, prāyeṇa . . . in the Śrīmad-Bhāgavatam, in another chapter, Twelfth Canto, it is said, kaler doṣa-nidhe rājan (SB 12.3.51). These instructions were given by Śukadeva Gosvāmī to Mahārāja Parīkṣit. So he addressed the king, "My dear King, in this age the faults are like the ocean," kaler doṣa-nidhe rājan. Doṣa-nidhe. Nidhi means ocean. "There are so many faults in this age that it can be accepted as the ocean of faults." Kaler doṣa-nidhe rājan asti hy eko mahān guṇaḥ. "There is one great opportunity. Although it is full of faulty things, still there is one hope.
That hope is," kīrtanād eva kṛṣṇasya mukta-saṅgaḥ paraṁ vrajet (SB 12.3.51), "If one simply chants the holy name of Kṛṣṇa, Hare Kṛṣṇa, then gradually he becomes purified from the contamination of this age." Kīrtanād eva kṛṣṇasya mukta-saṅgaḥ: "He becomes free from the contamination of this age." It is just like vaccine. In contagious disease there is vaccine, cholera. So this mantra, mahā-mantra, this is not ordinary sound. This is spiritual. So by chanting this mantra—Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare—one becomes free from the contamination of this age. And not only he becomes free from the contamination of this age, but paraṁ vrajet, he goes back to the spiritual world.