Arjuna heard from Krsna about Himself, and he agreed. So He is accepted by the direct disciple, Arjuna; He is accepted by Vyasadeva; He is accepted by Narada Muni

Expressions researched:
"Arjuna heard from Kṛṣṇa about Himself, and he said . . . He agreed" |"So He is accepted by the direct disciple, Arjuna; He is accepted by Vyāsadeva; He is accepted by Nārada Muni"

Correspondence

1975 Correspondence

This thing we have to understand, that Kṛṣṇa is the Supreme Personality of Godhead. And He is accepted. Arjuna heard from Kṛṣṇa about Himself, and he said . . . He agreed, paraṁ brahma paraṁ dhāma pavitraṁ paramaṁ bhavān puruṣaṁ śāśvatam ādyam (BG 10.12). So He is accepted by the direct disciple, Arjuna; He is accepted by Vyāsadeva; He is accepted by Nārada Muni; and recently, within two thousand years, He is accepted by the all the ācāryas of India—Śaṅkarācārya, Rāmānujācārya, Madhvācārya, Viṣṇu Svāmī; and lately, five hundred years ago, Śrī Caitanya Mahāprabhu.

751007 - Letter to Dina Bandhu written from Durban

This thing we have to understand, that Kṛṣṇa is the Supreme Personality of Godhead. And He is accepted. Arjuna heard from Kṛṣṇa about Himself, and he said . . . He agreed, paraṁ brahma paraṁ dhāma pavitraṁ paramaṁ bhavān puruṣaṁ śāśvatam ādyam (BG 10.12). So He is accepted by the direct disciple, Arjuna; He is accepted by Vyāsadeva; He is accepted by Nārada Muni; and recently, within two thousand years, He is accepted by the all the ācāryas of India—Śaṅkarācārya, Rāmānujācārya, Madhvācārya, Viṣṇu Svāmī; and lately, five hundred years ago, Śrī Caitanya Mahāprabhu.

So there is no doubt about Kṛṣṇa's becoming the Supreme Personality of Godhead. In the Śrīmad-Bhāgavatam it is confirmed, ete cāṁśa kalāḥ puṁsāṁ kṛṣṇas tu bhagavān svayam (SB 1.3.28): "The original Personality of Godhead—Kṛṣṇa." Similarly, in the Upaniṣad, in the Vedas and Brahma-saṁhitā, if you take evidence from the śāstras, everywhere you will find, kṛṣṇas tu bhagavān svayam. In the Brahma-saṁhitā, which is supposed to be written by Lord Brahmā, he says in the beginning:

īśvaraḥ paramaḥ kṛṣṇaḥ

sac-cid-ānanda-vigrahaḥ

anādir ādir govindaḥ

sarva-kāraṇa-kāraṇam

(Bs. 5.1)

So from śāstric evidences, from authentic evidences, from the ācāryas, from Bhagavad-gītā itself—everywhere you will find the confirmation, kṛṣṇas tu bhagavān svayam. So Caitanya Mahāprabhu's mission is that yāre dekha tāre kaha kṛṣṇa upadeśa (CC Madhya 7.128). It is not difficult.