"My dear Uddhava, only by exceptional fortune does someone become attracted to Me. And even if one is not completely detached from fruitive activities, or is not completely attached to devotional service, such service is quickly effective."
Devotees may be divided into three classes. The devotee in the first or uppermost class is described as follows. He is very expert in the study of relevant scriptures, and he is also expert in putting forward arguments in terms of those scriptures. He can very nicely present conclusions with perfect discretion and can consider the ways of devotional service in a decisive way. He understands perfectly that the ultimate goal of life is to attain to the transcendental loving service of Kṛṣṇa, and he knows that Kṛṣṇa is the only object of worship and love. This first-class devotee is one who has strictly followed the rules and regulations under the training of a bona fide spiritual master and has sincerely obeyed him in accord with revealed scriptures. Thus, being fully trained to preach and become a spiritual master himself, he is considered first class.