Prabhupāda: "And can never be slain." Because it is already described that soul cannot be burned, soul cannot be moistened, soul cannot be dried up, soul cannot be killed, soul cannot be cut into pieces. So many things. Just opposite of matter. Any material thing you take, even stone, iron, it can be burned, it can be cut into pieces, it can dry up and so many things, all applicable to the matter. But so far the spirit soul is concerned, it is just the opposite.
Therefore the conclusion is there, na hanyate hanyamāne śarīre (BG 2.20). Even after this body is annihilated, the soul remains eternal. Just like if somebody comes and drives us out of this room, that does not mean that I am finished. I shall go and take shelter of another room. Similarly, when the soul, when the body is killed or annihilated by nature or by force, the soul takes shelter of another body. That is the conclusion.
Go on.
Devotee: Thirty-one: "Considering your specific duty as a kṣatriya you should know that there is no better engagement for you than fighting on religious principles, and so there is no need for hesitation."
Prabhupāda: So here fighting is a matter of duty. That is the kṣatriya spirit. Fighting is not killing. Because people have no idea what is the soul, therefore they think that stopping war will help us in peaceful condition of the society. There are so many troubles so long this body is there. War is one of the item. Even war is stopped, there is no question that people will live forever. No. That is not the law of nature. Duḥkhālayam aśāśvatam (BG 8.15). This life, the problem is how to stop our contact with this material body That is the problem. Not that these general people, they are thinking, "If war . . . there is no war, then we shall be very happy." How you'll stop your war with māyā? Māyā has declared war with you, or you have declared war with māyā. Daivī hy eṣā guṇamayī mama māyā duratyayā (BG 7.14).
The māyā, the material nature, is enforcing, "Why you are closing this door?" "Oh, because it is very cold outside." Who is forcing? Immediately there will be cold, immediately there will be fog, immediately there will be excessive heat, immediately there may be earthquake. How you can stop it? So they simply think . . . just like innocent child, they are concerned with the immediate problem. But a sane man is concerned with the ultimate problem.
So our ultimate problem is not this war. The ultimate problem is repetition of birth and death. That is ultimate problem, how to stop this. That is the problem. So Kṛṣṇa says that, "This is useless lamentation, that you do not wish to fight. It is a concluded fact that even your grandfather or relatives die, they will continue as soul. You have to execute your duty. You cannot deviate from your duty."
Go on.
Devotee: Thirty-two: "O Pārtha, happy are the kṣatriyas to whom such fighting opportunities come unsought, opening for them the doors of the heavenly planets."
Thirty-three . . .
Prabhupāda: Now why the kṣatriyas . . . it is said in the śāstra if a kṣatriya dies in the fight, then he is promoted to the heavenly kingdom to take birth, because he is fighting for the right cause so he is promoted. As in this world also, if you fight for some right cause, you are rewarded. Even after your death, your memory is commemorated. Just like in your country so many brave soldiers, leaders, they have died, but you have honored them by keeping their statues because they fought and died for right cause, whatever we think, right or wrong.
So the kṣatriyas—this is the Vedic injunction—who dies for the right cause, he is promoted to the heavenly planet. Now Kṛṣṇa says, "Now it is a great opportunity for you. Suppose either you or your grandfather, the opposite party, die in this fight, so your promotion to heavenly planet is sure. And if you gain, then you get the kingdom. Both ways it is profitable for you."
Go on.