In any way you study Vedas—directly, indirectly, this way or that way—the conclusion is that the objective is Kṛṣṇa, Lord Caitanya says. And in the Bhagavad-gītā also we get the same information. You will find in the teachings of Bhagavad . . . Lord Caitanya, the same thing as in the Bhagavad-gītā. That is the beauty of teachings of all ācāryas, that you won't find any deviation from the teachings of Kṛṣṇa and the teachings of ācāryas.
Therefore it is said, ācāryavān . . . ācāryavān puruṣo veda (Chāndogya Upaniṣad 6.14.2): "One who has the guidance of a bona fide ācārya, he knows things. He knows things, what it is." Ācāryavān puruṣo veda: "One who is under the guidance of bona fide ācārya, he knows things, what they are."
So Kṛṣṇa also, as spiritual master of Arjuna, He played. He is the original ācārya. Then ācārya's disciple becomes ācārya when he assimilates the knowledge received from bona fide ācārya. So he becomes bona fide to act as an ācārya. Evaṁ paramparā-prāptam (BG 4.2).