Srimad Bhagavatam Canto 11, Chapter 06, Text 09

SB 11.6.9

suddhir nrnam na tu tathedya durasayanam
 vidya-srutadhyayana-dana-tapah-kriyabhih
sattvatmanam rsabha te yasasi pravrddha-
 sac-chraddhaya sravana-sambhrtaya yatha syat
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
O greatest of all, those whose consciousness is polluted by illusion cannot purify themselves merely by ordinary worship, study of the Vedas, charity, austerity and ritual activities. Our Lord, those pure souls who have developed a powerful transcendental faith in Your glories achieve a purified state of existence that can never be attained by those lacking such faith.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Even if a pure devotee is lacking the above qualifications, such as Vedic study and austerity, if he has unflinching faith in Lord Krsna the Lord will save him because of his devotion. On the other hand, if one becomes falsely proud of one’s material qualifications, including ordinary piety, but does not devote himself to hearing and chanting the glories of Krsna, the result will ultimately be nil. The transcendental spirit soul cannot be purified by any amount of material piety, charity or scholarship. Only the transcendental Supreme Lord can purify the transcendental living entity by bestowing His mercy within the heart. The demigods were astonished at their good fortune. Even by hearing about Krsna, one achieves all perfection, but they had entered the Lord’s own city and were seeing Him standing before them.
Srimad Bhagavatam Canto 11, Chapter 06, Text 08
Srimad Bhagavatam Canto 11, Chapter 06, Text 10