29. The whole world is amazing, from the tiniest atoms to the largest galaxies, for they are all wonderful creations of God. A little rose flower is also amazing, in its texture, smell, and beauty. The most amazing is the Supreme Lord himself. It is said that Anant Shesh, the divine ten thousand-headed serpent on whom Lord Vishnu resides, has been singing the glories of God since the beginning of creation, and has still not completed them.
The soul, being a fragmental part of God, is more amazing than the things of the world because it is transcendental to material existence. Just as God is divine, its fragment, the soul, is also divine. For this reason, mere intellectual prowess is not enough to comprehend the soul, since the existence and nature of the soul are difficult to grasp. The Kaṭhopaniṣhad states:
"A teacher who is self-realized is very rare. The opportunity to hear instructions about the science of self-realization from such a teacher is even rarer. If, by great good fortune, such an opportunity presents itself, students who can comprehend this topic are the rarest." Hence, an enlightened teacher is never discouraged when, despite sincere efforts, the majority of the people are either not interested in, or cannot understand the science of the soul.
30. Often, in the course of his teachings, Shree Krishna explains a concept in a few verses, and then states a verse summarizing those teachings. This verse is a summary of the instructions on the immortality of the self, and its distinction from the body.
31. Swa-dharma is one's duty as an individual, in accordance with the Vedas. There are two kinds of swa-dharmas, or prescribed duties for the individual—para dharma, or spiritual duties, and apara dharma, or material duties. Considering oneself to be the soul, the prescribed duty is to love and serve God with devotion. This is called para dharma. However, since a vast majority of humankind does not possess this spiritual perspective, the Vedas also prescribe duties for those who see themselves as the body. These duties are defined according to one's āśhram (station in life), and varṇa (occupation). They are called apara dharma, or mundane duties. This distinction between spiritual duties and material duties needs to be kept in mind while understanding the Bhagavad Gita and the Vedic philosophy at large.
By occupation, Arjun was a warrior, and so his occupational duty as a warrior was to fight for the protection of righteousness. Shree Krishna is calling this swa-dharma, or prescribed duty at the bodily level.
32. The warrior class has always been necessary in the world for protecting society. The occupational duties of warriors demand that they be brave and even willing to lay down their lives, if required, for the protection of society. During Vedic times, while killing animals was forbidden for the rest of society, warriors were allowed to go into the forest and practice warfare by killing animals. Such chivalrous warriors were expected to welcome the opportunity to defend righteousness with open arms. The discharge of their duty would be rewarded as a virtuous act in this life and the next.
The proper discharge of one's occupational duties is not a spiritual act in itself, and it does not result in God-realization. It is merely a virtuous deed with positive material rewards. Shree Krishna brings his instructions a step lower and says that even if Arjun is not interested in spiritual teachings, and wishes to remain at the bodily platform, then also his social duty as a warrior is to defend righteousness.
As we can see, the Bhagavad Gita is a call to action, not to inaction. When people are exposed to lectures on spirituality, they often question, "Are you asking me to give up my work?" However, verse after verse, Shree Krishna is giving Arjun the reverse instruction. While Arjun wishes to abandon his duty, Shree Krishna repeatedly coaxes him to discharge it. The change that Shree Krishna wishes to see in Arjun is an internal one, in his consciousness, and not an external renunciation of works. He now explains to Arjun the consequences of giving up his duty.
33. If a warrior chooses to become non-violent on the battlefield, it will be dereliction of duty, and hence, classified as a sinful act. Hence, Shree Krishna states that if Arjun abandons his duty, considering it to be repugnant and troublesome, he will be committing a sin. The Parāśhar Smṛiti states:
"The occupational duty of a warrior is to protect the citizens of the country from oppression. This requires the application of violence in appropriate cases for the maintenance of law and order. He should thus defeat the soldiers of enemy kings, and help rule the country according to the principles of righteousness."
34. For respectable people, social prestige is very important. The particular guṇas (modes of nature) of warriors make respect and honor especially important for them. For them, dishonor is worse than death. Shree Krishna reminds Arjun of this, so that if he is not inspired by superior knowledge, he may at least be inspired by inferior knowledge.
Many societies in the world observe the norm that a warrior who runs away from the battlefield out of cowardice is ostracized from society. That could be the extent of dishonor inflicted upon Arjun if he avoided his duty.
35. Arjun was famous as a mighty warrior and a worthy opponent for even the most valiant of the Kauravas warriors, such as Bheeshma, Dronacharya, Karn, etc. He had attained fame by fighting many celestial gods. He had fought and overwhelmed even Lord Shiv, who had come in the disguise of a hunter. Pleased with his valor and skill, Lord Shiv had rewarded him with a celestial weapon, called Pāshupatāstra. His teacher at archery, Dronacharya, had also bestowed his blessings upon him in the form of a special weapon. Just before the start of the battle, if Arjun were to retire from the battlefield, these gallant warriors wouldn't know that affection for his relatives had inspired him to flee. They would consider him a coward, and assume that he had abstained from the war in dread of their prowess.
36. If Arjun chose to flee from battle, not only would Arjun's estimation wane in the assembly of mighty warriors, but he would also be disparaged. Shree Krishna uses the word nindataḥ which means "to vilify." Avāchya vādān means the use of harsh words such as "Eunuch." Arjun's enemies, like Duryodhan, would say many unbecoming things about him, such as, "Look at that impotent Arjun fleeing from the battlefield like a dog with its tail between its legs." Shree Krishna reminds Arjun that such derision would be very painful to him.
37. Shree Krishna is still giving instructions at the level of occupational duties. He explains to Arjun about the two possibilities arising from the performance of his duty. If Arjun becomes victorious, a kingdom on Earth awaits him, and if he is forced to lay down his life in the discharge of his duty, he will go to the celestial abodes.