|| 3.37 ||

श्री भगवानुवाच काम एष क्रोध एष रजोगुणसमुद्भवः। महाशनो महापाप्मा विद्ध्येनमिह वैरिणम्।।

śrī-bhagavān uvāca kāma eṣa krodha eṣa rajo-guṇa-samudbhavaḥ mahāśano mahā-pāpmā viddhy enam iha vairiṇam

śrī-bhagavān (the Supreme Personality of Godhead) uvāca (said) kāmaḥ (lust/desire) eṣaḥ (this) krodhaḥ (anger) eṣaḥ (this) rajaḥ-guṇa (the mode of passion) samudbhavaḥ (born of) mahā-aśanaḥ (all-devouring) mahā-pāpmā (greatly sinful) viddhi (know) enam (this) iha (in this world) vairiṇam (the greatest enemy)

The Supreme Personality of Godhead said: It is lust only, Arjuna, which is born of contact with the material mode of passion and later transformed into wrath, and which is the all-devouring sinful enemy of this world.

Kṛṣṇa unmasks the internal hijacker. He says the enemy is ‘Kāma’, or lust, which is born of contact with the mode of passion. This lust, when frustrated, transforms into ‘Krodha’, or wrath. He calls it the ‘all-devouring’ and ‘greatly sinful’ enemy of this world.