Without Krishna's power of attorney from a genuine guru, preaching and spiritual advancement remain impossible.Listen — Srila Prabhupada Uvaca
Prabhupāda: [prema-dhvani] Thank you very much. [chants: Jaya Rādhā-Mādhava] [prema-dhvani] Thank you very much. Pradyumna: Oṁ namo bhagavate vāsudevāya. Oṁ namo bhagavate vāsudevāya. Oṁ namo bhagavate vāsudevāya.
[Prabhupāda and devotees repeat] [leads chanting, etc.] kṛṣṇa-śakti dhara tumi, jāna tattva-bhāva jāni' dārḍhya lāgi' puche—sādhura svabhāva [Cc Madhya 20.105] [10:45] Translation: "Since you possess Lord Kṛṣṇa's potency, you certainly know these things. However, it is the nature of a sadhu to enquire. Although he knows these things, the sadhu enquires for the sake of strictness." Prabhupāda: kṛṣṇa-śakti dhara tumi, jāna tattva-bhāva jāni' dārḍhya lāgi' puche—sādhura svabhāva So Sanātana Gosvāmī is guru. Caitanya Mahāprabhu is authorizing him to become guru.
This is paramparā system. Nobody can become guru all of a sudden. Self-made guru, that is not guru. Here Caitanya, er, Sanātana Gosvāmī is presented as the disciple, ideal disciple.
He is asking, ke āmi kene āmāya jāre tāpa-traya, process how to approach guru, how to ask him question. Tad viddhi praṇipātena paripraśnena [Bg 4.34]. Paripraśna means question. That is also required. But Caitanya Mahāprabhu is authorizing him.
Therefore He says, kṛṣṇa-śakti dhara tumi. Here Kṛṣṇa, Caitanya Mahāprabhu, He is authorizing Sanātana Gosvāmī. Unless he has got the power to receive the instruction, Caitanya Mahāprabhu is not going to waste His time. He has the power.
He is empowered. Kṛṣṇa..., Caitanya Mahāprabhu's mission is that to preach Kṛṣṇa consciousness all over the world. So He is empowering Sanātana Gosvāmī to take this task and spread Kṛṣṇa consciousness. That is Caitanya Mahāprabhu's mission.
There is... You'll find in the Caitanya-caritāmṛta the verse, kṛṣṇa-śakti vinā nahe nāma pracāraṇa [Cc Antya 7.11]. Without being empowered by Kṛṣṇa, nobody can preach the holy name of the Lord. Kṛṣṇa-śakti vinā nahe nāma pracāraṇa.