The Gita teaches freedom from attachment while persuading a man to fight his own relatives.
Two branches of one royal family have brought their armies to Kurukshetra. Arjuna asks his charioteer Krishna to stop between them. He sees relatives, teachers, and friends on both sides. His mouth dries, his limbs fail, and his bow slips from his hand. He wants no kingdom bought by killing these people.
Arjuna argues that the war will destroy families and their inherited rites. He fears women becoming “corrupt,” the mixing of social classes, and ancestors losing the offerings their descendants owe them (1.40-42). His objections include both affection for his kin and defense of a hierarchical social order. He would rather be killed unarmed. In chapter 2 he admits that he cannot tell what duty requires and asks Krishna to teach him.
The conversation takes place inside the Mahabharata, the Sanskrit epic about this family war. The blind king Dhritarashtra asks what is happening on the field. His counselor Sanjaya, granted supernatural sight, reports Krishna and Arjuna’s exchange. These eighteen chapters are the Bhagavad Gita, the “Song of the Lord.” Krishna is both Arjuna’s friend and a divine teacher, traditionally identified with Vishnu.
Krishna begins by distinguishing the body from atman, the enduring Self. The body dies; the Self takes another body as a person puts on new clothes. He then argues that Arjuna’s duty as a warrior requires him to fight this battle. Arjuna must act without making victory or personal gain his motive, and remain steady in success and failure. Dharma means duty or right order here; yoga is the discipline by which a person becomes free.
The goal is moksha, liberation from samsara, the cycle of birth and death. Actions can bind a person to further births. Even heaven is temporary: when the merit that earned it runs out, the person returns (9.20-21). Krishna teaches ways of acting, knowing, and loving that release this bondage. The advice about work and calm belongs to that religious aim.
Chapters 3 through 6 explain how action can lead toward freedom. Karma means action, and karma yoga means doing one’s duty without attachment to its rewards. Nobody can avoid all action, and people with influence must consider the example they set. Krishna also teaches jnana yoga, the path of knowledge: understanding the Self and its relation to Brahman, ultimate reality. Readers disagree about how these paths fit together and which finally liberates.
In chapter 4 Krishna says he takes form whenever dharma declines, to protect the good and destroy evildoers. Chapter 5 praises both renunciation and karma yoga, then calls karma yoga the better of the two (5.2). Chapter 6 gives instructions for meditation: sit steadily, regulate food and sleep, and bring the wandering mind back. Arjuna says controlling it seems as hard as controlling the wind. Krishna recommends practice and dispassion, the loosening of attachment. When Arjuna asks what happens to someone who fails at yoga, Krishna says the effort is not lost and can continue in another birth.
Chapters 7 through 10 explain who Krishna is. He claims to be the source and support of the universe. Bhakti, devotion to him, becomes central. He accepts a leaf, flower, fruit, or water offered with devotion, and tells Arjuna to offer his ordinary acts too. Chapter 8 connects a lifetime of remembrance with remembering Krishna at death and reaching him beyond rebirth. Release depends on God’s help as well as the practitioner’s effort.
In chapter 11 Arjuna asks to see Krishna’s cosmic form. Given divine sight, he sees countless faces and mouths swallowing the warriors. Krishna identifies himself as Time, the destroyer, and tells Arjuna to be his instrument. Arjuna is terrified. He asks to see the familiar form again, and Krishna grants it. Chapter 12 describes the devotee Krishna loves: friendly, compassionate, forgiving, and steady in pain and pleasure.
Chapters 13 through 17 examine the body, the Self, and nature. The body is a field; the Self is its knower, and Krishna says he knows every field (13.2-3 in Besant’s numbering). Three gunas, qualities of nature, bind the embodied Self: sattva through clarity and happiness, rajas through restless desire, and tamas through ignorance and inertia. Chapter 15 calls Krishna Purushottama, the Supreme Person, beyond both the perishable and the imperishable. Chapters 16 and 17 examine character, faith, food, sacrifice, and giving. These chapters ask what keeps a person bound and what helps them become free.
Chapter 18 returns to action, knowledge, and devotion, and applies the gunas to work, judgment, resolve, and pleasure. It also assigns duties to the four social classes. Krishna tells Arjuna to reflect on the teaching and act as he chooses (18.63). Three verses later he tells him to abandon all duties and take refuge in him alone, promising release from sin (18.66). How to reconcile those commands is one of the book’s lasting disputes.
Arjuna answers that his confusion is gone and he will do as Krishna says (18.73). Sanjaya closes by recalling the conversation and predicting victory where Krishna and Arjuna are together. The Gita ends before the fighting. In the larger epic, the war they are about to join destroys much of their family.