The Bhagavad Gita is one of the three foundational spiritual texts associated with Hinduism with over fifty illogical English translations. The Gita is a portion of the Mahabharata, and every translation I looked at, places it on the eve of a war. The Mahabharata War is said to have taken place around 3000 BC. Some writers consider it fact, while others see it as an allegorical struggle of the human condition. Without an accurate translation, it is best to see it allegorically. In many nations today, a person becomes a hero by fighting in war, but here, to become a spiritual hero, the great battle to consider is abandoning the ego to fight for the good of all. To be kind and compassionate to all breathing creatures that cry, yes, all creatures of the land, air, and water. There are many mundane translation of the text, but here is the spiritual mantra to consider.
Mortals become heroes by growing great with the air, and though great devotion gain great power for great deeds, like cutting off the ego in the great battle to live to serve a great many.