The third shloka of the Bhagavad Gita is:
"क्लैब्यं मा स्म गमः पार्थ नैतत्त्वय्युपपद्यते।
क्षुद्रं हृदयदौर्बल्यं त्यक्त्वोत्तिष्ठ परंतप॥"
In this verse, Lord Krishna continues to encourage Arjuna to rise above his fears and doubts and to perform his duty as a warrior. He emphasizes the importance of fulfilling one's duty and doing what is right, regardless of the outcome.
The first line of the verse, "Shreyan swadharmo vigunah paradharmat swanushthitat," means "It is better to perform one's own duty imperfectly than to perform another's duty perfectly." Lord Krishna is reminding Arjuna that each person has a unique duty in life, and that it is more important to fulfill one's own duty to the best of one's ability, rather than trying to perform someone else's duty.
The second line, "Svadharme nidhanam shreyah paradharmo bhayavahah," means "It is better to die in the fulfillment of one's own duty; the duty of another is fraught with fear." Lord Krishna is saying that fulfilling one's own duty, even if it means facing death, is better than shirking one's duty or trying to perform someone else's duty, which can lead to fear and uncertainty.
In the third line, Lord Krishna introduces the concept of the eternal soul, saying "na jayate mriyate va kadacin nayam bhutva bhavita va na bhuyah." This means "The soul is neither born nor does it die, nor is it that having once come into being, it again ceases to exist." Lord Krishna is pointing out that the true nature of the self is eternal and unchanging, and that it transcends birth and death.
Finally, in the last line, Lord Krishna says, "Ajo nityah shashvato'yam purano na hanyate hanyamane sharire," which means "It is unborn, eternal, everlasting, and ancient. It is not destroyed when the body is destroyed." Lord Krishna is emphasizing the eternal nature of the self and reminding Arjuna that even if his body is destroyed in battle, his true self will continue to exist.
The title of this article, "The Eternal Soul," reflects the central theme of this verse. Lord Krishna is introducing the concept of the eternal self, which is a key idea in the Bhagavad Gita. He is pointing out that the true nature of the self is eternal and unchanging, and that it transcends birth and death. This is a powerful reminder that our true nature is not defined by our physical bodies or our temporary roles in life, but by our eternal essence. The third shloka of the Bhagavad Gita encourages us to connect with our true selves and to fulfill our duty with the knowledge that our true essence is eternal and unchanging.