One verse

Srimad Bhagavatam 6.3.31

6.3.31

तस्मात् सङ्कीर्तनं विष्णोर्जगन्मङ्गलमंहसाम् । महतामपि कौरव्य विद्ध्यैकान्तिकनिष्कृतम् ॥ ३१ ॥

tasmat sankirtanam visnor jagan-mangalam amhasam mahatam api kauravya viddhy aikantika-niskrtam

tasmat
therefore
sankirtanam
the congregational chanting of the holy name
visnoh
of Lord Visnu
jagat-mangalam
the most auspicious performance within this material world
amhasam
for sinful activities
mahatam api
even though very great
kauravya
O descendant of the Kuru family
viddhi
understand
aikantika
the ultimate
niskrtam
atonement.

Sukadeva Gosvami continued: My dear King, the chanting of the holy name of the Lord is able to uproot even the reactions of the greatest sins. Therefore the chanting of the sankirtana movement is the most auspicious activity in the entire universe. Please try to understand this so that others will take it seriously.