There are three classes of devotees, namely first, second and third class. The third-class devotees, or the neophytes, who have no knowledge and are not detached from material association, but who are simply attracted by the preliminary process of worshiping the Deity in the temple, are called material devotees. Material devotees are more attached to material benefit than transcendental profit. Therefore, one has to make definite progress from the position of material devotional service to the second-class devotional position. In the second-class position, the devotee can see four principles in the devotional line, namely the Personality of Godhead, His devotees, the ignorant and the envious. One has to raise himself at least to the stage of a second-class devotee and thus become eligible to know the Absolute Truth.
A third-class devotee, therefore, has to receive the instructions of devotional service from the authoritative sources of Bhāgavata. The number one Bhāgavata is the established personality of devotee, and the other Bhāgavata is the message of Godhead. The third-class devotee, therefore, has to go to the personality of devotee in order to learn the instructions of devotional service. Such a personality of devotee is not a professional man who earns his livelihood by the business of the Bhāgavatam. Such a devotee must be a representative of Śukadeva Gosvāmī, like Sūta Gosvāmī, and must preach the cult of devotional service for the all-around benefit of all people. A neophyte devotee has very little taste for hearing from the authorities. Such a neophyte devotee makes a show of hearing from the professional man to satisfy his senses. This sort of hearing and chanting has spoiled the whole thing, so one should be very careful about the faulty process. The holy messages of Godhead, as inculcated in the Bhagavad-gītā or in Śrīmad-Bhāgavatam, are undoubtedly transcendental subjects, but even though they are so, such transcendental matters are not to be received from the professional man, who spoils them as the serpent spoils milk simply by the touch of his tongue.
Ref >> Srila Prabhupada Vani.