13 Krsna helps the sincere chanter
If Krsna sees that one is chanting Hare Krsna sincerely, He helps internally and externally:
We should try to avoid the ten offenses in chanting the holy name, but anyone who chants Hare Krsna sincerely is purified. Ceto−darpana−marjanam bhava−maha−davagni−nirvapanam [Cc. Antya 20.12] (Siksastaka 1). This is the easiest process by which the mirror of the mind can be cleansed. If Krsna sees that someone is sincerely chanting Hare Krsna, He will help. He is within everyone, and He can understand whether one is sincere or not. Krsna helps a sincere devotee internally and externally. Internally He helps as Paramatma by giving intelligence from within. Dadami buddhi−yogam tam. Externally He helps as His representative, the spiritual master.
– Teachings of Lord Kapila, the Son of Devahuti
Revival of love of God does not depend on mechanical hearing and chanting, but on the Lord's causeless mercy:
[Devotional service] is a great transcendental science and begins with the process of hearing and chanting the name, fame, glory, etc., of the Supreme Personality of Godhead. Revival of the dormant affection or love of Godhead does not depend on the mechanical system of hearing and chanting, but it solely and wholly depends on the causeless mercy of the Lord. When the Lord is fully satisfied with the sincere efforts of the devotee, He may endow him with His loving transcendental service.
– Srimad Bhagavatam