So Kṛṣṇa says that ācāryaṁ māṁ vijānīyān: (SB 11.17.27) "You accept ācārya as I am." Why? I see that he is a man. His sons call him father, or he looks like a man, so why he should be as good as God? Because he speaks as God speaks, that's all. Therefore. He does not make any change. Just like God says, Kṛṣṇa says, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66). The guru says that you surrender to Kṛṣṇa or God. The same word. God says man-manā bhava mad-bhakto mad-yājī māṁ namaskuru (BG 18.65). Guru says that you always think of Kṛṣṇa, you surrender unto Him, you offer Him prayer, you become His devotee. There is no change. Because he says as the Supreme Personality says, therefore he is guru. Even though you see that he is materially born, his behavior is like other men. But because he says the same truth as it is spoken in the Vedas or by the Personality of Godhead, therefore he is guru. Because he does not make any change whimsically, therefore he is guru. That is the definition. It is very simple. Caitanya Mahāprabhu has asked everyone to become guru. Everyone. Because there is need of guru. The world is full of rascals, therefore there is need of so many gurus to teach them. But what is that qualification of the guru? How everyone can become guru? This may be the question, next question. Because Caitanya Mahāprabhu says, āmāra ājñāya guru hañā tāra ei deśa (CC Madhya 7.128). Ei deśa means wherever you are living you become a guru and deliver them. Suppose you are living in a small neighborhood, you can become a guru of that neighborhood and deliver them. "How it is possible? I have no education, I have no knowledge. How I can become guru and deliver them?" Caitanya Mahāprabhu said it is not at all difficult. Yāre dekha tāre kaha 'kṛṣṇa'-upadeśa (CC Madhya 7.128). This is your qualification. If you simply deliver the message given by Kṛṣṇa you become guru. Kṛṣṇa said, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66). You preach, you request everyone, "Sir, you surrender to Kṛṣṇa." You become guru. Very simple thing. Kṛṣṇa said, man-manā bhava mad-bhakto mad-yājī māṁ namaskuru (BG 18.65). You say that "You become a devotee of Kṛṣṇa, you offer obeisances. Here is a temple; here is Kṛṣṇa. Please come here. You offer your obeisances, and if you can you offer patraṁ puṣpaṁ phalaṁ toyaṁ (BG 9.26). You don't offer... But it is very simple thing. Anyone can secure a little flower, a little fruit, a little water. It is not at all difficult."
So this is the guru's qualification. Guru does not show any magic or produce some wonderful things then he becomes guru. So practically I have done this. People are giving me credit that I have done miracles, but my miracle is that I carried the message of Caitanya Mahāprabhu: yāre dekha tāre kaha 'kṛṣṇa'-upadeśa (CC Madhya 7.128). So this is the secrecy. So anyone of you, you can become guru. It is not that I am an extraordinary man, an extraordinary god coming from some mysterious place. It is not that—it is very simple thing.