In this verse the words krtavan yani indicate that all the different activities Krsna performed while present on earth are beneficial to human society. If religionists, philosophers and people in general simply hear the activities of Krsna, they will be liberated. We have described several times that there are two kinds of krsna-katha, represented by Bhagavad-gita, spoken personally by Krsna about Himself, and Srimad-Bhagavatam, spoken by Sukadeva Gosvami about the glories of Krsna. Anyone who becomes even slightly interested in krsna-katha is liberated. Kirtanad eva krsnasya mukta-sangah param vrajet (Bhag. 12.3.51). Simply by chanting or repeating krsna-katha, one is liberated from the contamination of Kali-yuga. Caitanya Mahaprabhu therefore advised, yare dekha, tare kaha krsna-upadesa (Cc. Madhya 7.128). This is the mission of Krsna consciousness: to hear about Krsna and thus be liberated from material bondage.