In the Viṣṇu-dharma there is a statement glorifying this process of congregational chanting: "My dear King, this word Kṛṣṇa is so auspicious that anyone who chants this holy name immediately gets rid of the resultant actions of sinful activities from many, many births." That is a fact. There is the following statement in Caitanya-caritāmṛta: "A person who chants the holy name of Kṛṣṇa once can counteract the resultant actions of more sinful activities than he is able to perform." A sinful man can perform many, many sinful activities, but he is unable to perform so many that they cannot be wiped out by one single uttering of Kṛṣṇa.
In the Seventh Canto, Ninth Chapter, verse 18, of Śrīmad-Bhāgavatam, Mahārāja Prahlāda offers the following prayers to the Lord: "My dear Lord Nṛsiṁha, if I can be elevated to the position of Your servant, then it will be possible for me to hear about Your activities. You are the supreme friend, the supreme worshipable Deity. Your pastimes are transcendental, and simply by hearing of them one can counteract all his sinful activities. Therefore, I shall not care for all those sinful activities, because simply by hearing about Your pastimes I shall get out of all the contamination of material attachment."
There are many songs about the Lord's activities. For example, there is the Brahma-saṁhitā, sung by Lord Brahmā; Nārada Pañcarātra, sung by Nārada Muni; and Śrīmad-Bhāgavatam, sung by Śukadeva Gosvāmī. If these songs are heard by any person, he can easily get out of the clutches of material contamination. There should be no difficulty in hearing these songs of God. They are coming down from many, many millions of years ago, and people are still taking advantage of them. So why, at this time, should one not take full advantage and thus become liberated?