There are 700 verses in the Bhagavad-gītā. It is the most concise summary of the conclusions of the teachings of the Upaniṣads, the essence of the Vedas.

It was re-spoken by Lord Krishna to Arjuna in 3137 B.C. 35 years before the start of Kali-yuga (3102 B.C.). Previously, the Lord had revealed the Bhagavad-gītā to the sun-god Vivasvān millions of years before.

The Lord revealed this divine knowledge on the battlefield in Kurukṣetra.

The root word of yoga is yug, which mean union. The purpose of yoga (of any form) is to connect with God and realise Him.

There were 5 Pāṇḍavas, or sons of King Pāṇḍu. The Kauravas comprised of 100 brothers and one sister.

Yudhiṣṭhira was the eldest, followed by Bhīma and then Arjuna, Nakula and Sahadeva. Duryodhana was the eldest of the Kauravas.

The first instruction by the Lord was that we, the living beings, are eternal spirit souls and not the temporary material body. This forms the foundational understanding in spiritual science.

Of the five main themes in the Bhagavad-gītā, God, the spirit soul, time and material nature are eternal, but karma is not eternal as it can be stopped when we attain liberation by surrendering to the Lord. Material nature is an energy of the Lord, as is therefore eternal.

The primary aim of the yoga practice is to discipline the mind so that it is not focused on material objects but on God.

A living being experiences death when the soul leaves the body. Consciousness is the symptom of the soul, and so a dead body is devoid of consciousness. The soul then gets another suitable body, either material or spiritual. Even in this life, the body keeps changing from birth to childhood to youth and to old age, but the soul remains the same throughout.