Srimad Bhagavatam 11:2:55
विसृजति हृदयं न यस्य साक्षाद्धरिर् अवशाभिहितोऽप्य अघौघ-नाशः ।
प्रणय-रसनया धृताङ्घ्रि-पद्मः स भवति भागवत-प्रधान उक्तः ॥
The utterance of the name of Hari will absolve one of all sins even when such utterance is made only when one is in great trouble or even unintentionally or unwillingly.
The devotee who has taken shelter under the Lotus Feet of the lord and Chants the Divine name with love, The Lord Hari resides in their heart and never leaves. The one who has thus captured the Lord in their heart by Love is considered the chief among the devotees of the Lord, Bhagavatha Pradhana.
Please check these: Excerpts from a discourse by our Sri Sri Muralidhara Swamiji
The one who has no expectations on wordly desires and who accepts everything as the Will of the Lord Vasudeva is a supreme devotee (Uthama Bhagavatha).
Witnessing and accepting all the happenings in the world as His play pleases Him more than anything else.
The extremely beloved is desired; by whomsoever this Atman is extremely beloved, he becomes the most beloved of the Atman. So that this beloved may attain the Atman, the Lord Himself helps.
The one, whom all the riches of the three worlds cannot distract from the remembrance of the Lord’s lotus feet even for half a second, is the foremost of all the vaishanavas.
The sooner you chant the Maha Mantra, all your sins will be wiped out. There is nothing to worry about it. I will vouch for it.
Nama Kirtan, whether done knowingly or unknowingly, certainly has to give its effect
The Name of God, chanted correctly or incorrectly, knowingly or unknowingly, carefully, is sure to give the desired result.
Whats the result of the Divine Name uttered helplessly?
A fallen, slipped or pained person is redeemed from all sins, if he cries out loudly his surrender unto Lord Hari even while sneezing
If a person Hears, Chants the Divine Name, meditates upon, worships or even offers great respect to the Supreme Lord, the Lord will remove the sins accumulated during many thousands of lifetimes.
The only certain course for success declared unanimously by all the sages of yore is the hearing, chanting, and meditation of the Glory of the Divine Name of Sri Hari.
Chant the Mahamantra Nama kirtan :
Hare Rama Hare Rama Rama Rama Hare Hare
Hare Krishna Hare Krishna Krishna Krishna Hare Hare