This is the injunction, Vedic. If you want to know things which is beyond your conception, beyond your sense perception, then you must approach a bona fide spiritual master. What is the symptom of bona fide spiritual master? Everyone wants to become spiritual master. So that is also stated. Śābde pare ca niṣṇātam. One who has taken complete bath in the ocean of the Vedic literature, śābde pare ca niṣṇātam. Just like if you take bath, you become refreshed. If you take nice bath, you feel refreshed. Śābde pare ca niṣṇātam. Without refreshness, one cannot understand this sublime subject matter. And the guru, or the spiritual master, should be refreshed by taking bath in the ocean of Vedic knowledge. And what is the result? Śābde pare ca niṣṇātaṁ brahmaṇy upaśamāśrayam. By, after such cleanliness, he has taken shelter of the Supreme Absolute Truth, without any material desires. He has no more any material desires; he's simply interested in Kṛṣṇa, or the Absolute Truth. These are the symptoms of guru, or spiritual master.
So in order to understand... Just like Kṛṣṇa is teaching Arjuna. Before this, Kṛṣṇa surrendered himself. Śiṣyas te 'haṁ śādhi māṁ prapannam (BG 2.7). Although they were friends, Kṛṣṇa and Arjuna were friends... First of all, they were talking like friends, and Arjuna was arguing with Kṛṣṇa. This argument has no value because if I am imperfect, what is the meaning of my argument? Whatever I shall argue, that is also imperfect. So what is the use of wasting time by imperfect argument? This is not process. The process is that we must approach to a perfect person and take his instruction as it is.