Even there is no enmity, there are so many living entities, just like bugs, mosquitoes, other animals. They are always prepared to give us trouble. This is called adhibhautika. Adhyātmika, adhibhautika and adhidaivika, which is beyond your . . . Every miserable condition is beyond your control, but especially adhidaivika: famine, pestilence, overflood, no rain, scarcity. This is called adhidaivika. So this is called conditioned life.
So if you have got perfect knowledge—that is described here that jñānaṁ vijñāna-sahitam—if you have got perfect knowledge, then the result will be yaj jñātvā. If you possess that perfect knowledge, then mokṣyase aśubhāt. These conditions we don't want. That is the real fact. We don't want any miserable condition due to my mind, due to my body, or due to other living entities or natural disturbances, birth, death, old age, disease. We don't want. These are inauspicities of life. But if you have got perfect knowledge, then Kṛṣṇa says that you become liberated from all these inauspicities. That is the subject matter of this chapter.
Therefore Kṛṣṇa says that this knowledge is rāja-vidyā. We have got different departments of knowledge, university and institutes. But nowhere this subject matter is discussed or there is any department. There are . . . Suppose medical department. What is the medical department? To give us relief from diseased condition. But there is no department which discusses how to become free from all diseases. That is not found. There is no such department. There is department how to give you relief from disease, there is department how to manufacture, I mean to, very effective medicines, but there is no department where knowledge is given that no more disease. Is there any department? Therefore this knowledge which is given by Kṛṣṇa, it is called rāja-vidyā.