Arjuna asked why a person commits wrong action even while knowing better, as though forced by some power. Kṛṣṇa now identifies that power. It is not an outside devil, fate, planet, or another person. The enemy is within: kāma and krodha.

Kāma means desire, craving, wanting, or the restless sense of “I need this to be happy.” It is born of rajo-guṇa, the guṇa of activity, restlessness, projection, and outward movement. Because of kāma, the mind becomes extroverted. It runs toward objects, situations, people, pleasures, recognition, position, comfort, and control. The mind says, “If I get this, then I will be fulfilled.”

But kāma is mahāśanaḥ — a great eater, insatiable. One fulfilled desire does not end desire. It often produces more desire. A person without money wants some money. With some money, he wants more. With more, he wants status. With status, he wants greater status. Desire does not say, “Enough.” It keeps expanding.

Then why does the verse also say krodha eṣa — “it is anger”? Because anger is not separate from desire. When desire is obstructed, it becomes anger. If I strongly want something and someone blocks it, I become irritated, resentful, or violent. The intensity of anger is often proportional to the intensity of the desire behind it.

Krodha is mahāpāpmā — a great sinner, because anger makes a person violent. Violence may be physical, but it may also be verbal. A sharp tongue can wound deeply. Anger makes us speak and act in ways that violate dharma. It pushes us into pāpa and brings us down spiritually.

Therefore, kāma and krodha are the enemies of karma-yoga. Kāma makes the person extroverted and dependent. Krodha makes the person violent and harmful. An extroverted and violent person cannot steadily follow dharma. Therefore Kṛṣṇa says, viddhi enam iha vairiṇam — know this to be the enemy here in this life.

The teaching is not that every simple preference is evil. The problem is binding desire — desire that overpowers discrimination and demands fulfillment at the cost of dharma. Such kāma, and the krodha that follows when it is blocked, must be recognized as the inner enemy.