If you want to increase this śraddhā, then you have to make association with the devotees.
Just like all these European, American, Canadians, all my devotees, they came first to me when I began this Kṛṣṇa consciousness movement in New York. I was chanting underneath a tree, and these boys and girls, they were coming. So that was śraddhā. Then as they gradually came to me, that is called sādhu-saṅga. Just like anything you want to learn, you must associate with such kind of men. If you want to learn business, there are so many business corporation, association. So sometimes you become member in the stock exchange and other association to learn their business and make progress in their business. Similarly, if you want to increase your love for Kṛṣṇa, or God, you must associate with persons who are interested in this business—devotees.
These devotees, they have no other interest. All these boys and girls who are under my direction, they have no other interest, simply Kṛṣṇa. So we have to associate with such persons, adau śraddhā tato sādhu-saṅga (CC Madhya 22.54). Sādhu-saṅga means to associate with the devotees. Adau śraddhā tato sādhu-saṅga. Sādhu. Sādhu, this word, Sanskrit word, is meant for the devotees, the lover of Kṛṣṇa. That is also explained in the Bhagavad-gītā: sādhur eva sa mantavyaḥ (BG 9.30). Api cet sudurācāro bhajate mām ananya-bhāk, sādhur eva sa mantavyaḥ. One who has unflinching faith in Kṛṣṇa, one who is cent percent engaged to render service to Kṛṣṇa, he is called sādhu. Sādhu does not mean a kind of dress or kind of beard. No. Sādhu means a devotee, perfect devotee of Kṛṣṇa.