The first chapter of the Bhagavad Gita - Arjuna Vishada Yoga introduces the setup, the setting, the characters and the circumstances that led to the epic battle of Mahabharata, fought between the Pandavas and the Kauravas. It outlines the reasons that led to the revelation of the of Bhagavad Gita. As both armies stand ready for the battle, the mighty warrior Arjuna, on observing the warriors on both sides becomes increasingly sad and depressed due to the fear of losing his relatives and friends and the consequent sins attributed to killing his own relatives. So, he surrenders to Lord Krishna, seeking a solution. Thus, follows the wisdom of the Bhagavad Gita.
But, O best among the Brahmanas, please be appraised of those who are foremost among us, the principal warriors of my army. I speak of them to you by way of example.OPEN VERSE
(They are:) Your venerable self, Bhisma and Karna, and Krpa who is ever victorious in battle; Asvatthama, Vikarna, Saumadatti and Jayadratha.OPEN VERSE
There are many heroes who have dedicated their lives for my sake, who possess various kinds of weapons and missiles, (and) all of whom are skilled in battle.OPEN VERSE
Therefore, our army under the complete protection of Bhisma and others is unlimited. But the army of these (enemies), under the protection of Bhima and others is limited.OPEN VERSE
However, venerable sirs, all of you without exception, while occupying all the positions in the different directions as allotted (to you respectively), please fully protect Bhisma in particular.OPEN VERSE