In this age, chanting of Hare Krsna Mantra is the prime business of the devotee, and preaching of this Hare Krsna Mantra by outdoor Sankirtana and propagation of literature is our more important business. Side by side, Deity worship is recommended, but when there is a question of accepting one of them, we shall prefer to accept chanting of Hare Krsna Mantra first.
Srila Prabhupada,Letter, 5 Sep 1969