There are two kinds of Vaiṣṇavas-bhajanānandī and goṣṭhy-ānandī. A bhajanānandī is not interested in preaching work, but a goṣṭhy-ānandī is interested in spreading Kṛṣṇa consciousness to benefit the people and increase the number of Vaiṣṇavas. A Vaiṣṇava is understood to be above the position of a brāhmaṇa. As a preacher, he should be recognized as a brāhmaṇa; otherwise there may be a misunderstanding of his position as a Vaiṣṇava. However, a Vaiṣṇava brāhmaṇa is not selected on the basis of his birth but according to his qualities. Unfortunately, those who are unintelligent do not know the difference between a brāhmaṇa and a Vaiṣṇava. They are under the impression that unless one is a brāhmaṇa he cannot be a spiritual master. For this reason only, Śrī Caitanya Mahāprabhu makes the statement in this verse:
kibā vipra, kibā nyāsī, śūdra kene naya
yei kṛṣṇa-tattva-vettā, sei ‘guru’ haya
If one becomes a guru, he is automatically a brāhmaṇa. Sometimes a caste guru says that ye kṛṣṇa-tattva-vettā, sei guru haya means that one who is not a brāhmaṇa may become a śikṣā-guru or a vartma-pradarśaka-guru but not an initiator guru. According to such caste gurus, birth and family ties are considered foremost. However, the hereditary consideration is not acceptable to Vaiṣṇavas. The word guru is equally applicable to the vartma-pradarśaka-guru, śikṣā-guru and dīkṣā-guru. Unless we accept the principle enunciated by Śrī Caitanya Mahāprabhu, this Kṛṣṇa consciousness movement cannot spread all over the world. According to Śrī Caitanya Mahāprabhu’s intentions: pṛthivīte āche yata nagarādi-grāma sarvatra pracāra haibe mora nāma. Śrī Caitanya Mahāprabhu’s cult must be preached all over the world. This does not mean that people should take to His teachings and remain śūdras or caṇḍālas. As soon as one is trained as a pure Vaiṣṇava, he must be accepted as a bona fide brāhmaṇa.
Ref>>Srila Prabhupada Vani.