chapter 16 , Shloka 21

त्रिविधं नरकस्येदं द्वारं नाशनमात्मनः।
कामः क्रोधस्तथा लोभस्तस्मादेतत्त्रयं त्यजेत्।। १६.२१ ।।

Summary Translation:

There are three gates leading to this hell—lust, anger and greed. Every sane man should give these up, for they lead to the degradation of the soul.

Detailed Analysis:

This shloka is one of the most critical Warnings in the Bhagavad Gita, as it identifies the Root of all demonic qualities. Lord Krishna explicitly names three vices—Kama (lust), Krodha (anger), and Lobha (greed)—as the Gates to hell. These are not merely Emotions; they are Destructors of the atman. The phrase Nashanam-atmanah signifies that these three vices lead to the Suicide of the soul's spiritual awareness. When a person is driven by Lust, their Intelligence is clouded. When they are consumed by Anger, their Mercy vanishes. When they are possessed by Greed, their Contentment is destroyed. Krishna is Instructing that the Path to liberation begins with the Renunciation of these three. In a religious context, these gates represent the Entry Points for Maya to take control of the human mind. For a Hindu, the ultimate Goal is to move toward the Supreme, but these gates lead the soul in the Opposite direction. The analysis suggests that Lust is the desire for illicit gratification, Anger is the reaction to unfulfilled lust, and Greed is the insatiable hunger for more than one’s Need. Krishna's Command is simple yet profound: tasmad-etat-trayam-tyajet—therefore, one must give up these three. This is a Mandate for anyone seeking Peace. The Significance of this shloka is that it provides a Map for self-purification. By identifying these Enemies, the seeker can Guard their heart. Krishna’s Diagnosis proves that these three are the Seeds of all demonic behavior described earlier in the chapter. Without closing these Gates, Progress is Impossible. This verse acts as a Foundation for moral and Discipline. It reinforces the Truth that the soul’s Degradation is self-inflicted through these Choices. Ultimately, Salvation requires the Strength to abandon these Vices and turn toward the light of God.