It doesn't matter whether one is a brāhmaṇa, kibā vipra, kibā śūdra, or one is śūdra, kibā vipra, kibā nyāsī, kene naya, or whether he is a sannyāsī. Yei kṛṣṇa-tattva-vettā, one must know the science of Kṛṣṇa. The science of Kṛṣṇa is being explained by Kṛṣṇa Himself.
So in whatever position you are, you try to understand the science of Kṛṣṇa. Then you become guru. That is Caitanya Mahāprabhu's mission.
- yāre dekha, tāre kaha 'kṛṣṇa'-upadeśa
- āmāra ājñāya guru hañā tāra' ei deśa
- (CC Madhya 7.128)
This is Caitanya Mahāprabhu's mission. He says, "You become a spiritual master." "How? I have no qualification." "No. You just accept my order?" "So what is your order, sir?" Yāre dekha, tāre kaha 'kṛṣṇa'-upadeśa: (CC Madhya 7.128) "You simply speak the instruction of Kṛṣṇa whoever you meet. Then you become a spiritual master."
So actually it is happening. We are not wonderful men. But our only business is that we are speaking only the same thing as Kṛṣṇa has spoken. That's all.