Quoted from SBV on Dandavats.com

By HH Kavicandra Swami:

To make us wholly devoted to Krsna’s name, Sri Gaurangadeva, the combined form of Radha Govinda, came to this world. But if we disregard His teachings and show no interest in sri-nama-seva, we will never attain auspiciousness. Sri-nama-sankirtan is the best sadhana. If other sadhanas help us in krsna-sankirtana, then they deserve to be called sadhana: otherwise there are simply impediments to sadhana. Sri Krsna nama sankitana is the emperor of sadhanas. It is the only infallible sadhana capaable of bringing us to siddhi. Sriman Mahaprabhu did not speak of teaching arcana, but in siksastaka he taught nama-bhajana. Although in kali-yuga other limbs of bhakti should be performed, they shuld be accompanied by bhakti denoted by kirtana. Krsna and krsna-nama are not two entities. Krsna is HIs holy name, and the holy name is Krsna. Krsna-nama is the son of Nanda, Syamasundara. Our only devotional service and duty is sri-krsna-nama-snakirtana. This understanding is auspicious.”