In the list of the ten kinds of offenses in chanting the holy name of the Supreme Personality of Godhead, Hare Krsna, the eighth offense is dharma-vrata-tyaga-hutadi-sarva-subha-kriya-samyam api pramadah. One should never consider the chanting of the holy name of Godhead equal to pious activities like giving charity to brahmanas or saintly persons, opening charitable educational institutions, distributing free food and so on. The results of pious activities do not equal the results of chanting the holy name of Krsna.

From Srila Prabhupada's purport to Cc Adi 3.79