Bhagavad Gita Chapter 2, Verse 33

अथ चेत्त्वमिमं धर्म्यं संग्रामं न करिष्यसि | ततः स्वधर्मं कीर्तिं च हित्वा पापमवाप्स्यसि ||

atha cet tvam imaṁ dharmyaṁ saṅgrāmaṁ na kariṣyasi tataḥ sva-dharmaṁ kīrtiṁ ca hitvā pāpam avāpsyasi

But if you do not perform this righteous war, then abandoning your own duty and reputation, you will incur sin.

Krishna shifts from opportunity to consequence. 'Dharmyaṁ saṅgrāmam na kariṣyasi' (if you don't fight this righteous battle)—refusing to act isn't neutral; it's active abandonment. You can't 'not choose.' 'Sva-dharmam hitvā' (abandoning own duty)—the core issue. As protector-warrior, Arjuna's refusal harms those depending on him. 'Pāpam avāpsyasi' (you will incur sin)—not divine punishment but natural consequence, like ignoring health and getting sick. The challenge: sometimes 'doing nothing' feels safe but is harmful. Inaction when action is required isn't innocence. Context matters: Arjuna's specific situation (exhausted peace efforts, genuine injustice, warrior nature) makes refusal adharmic—but a different situation might make refusal dharmic. Wisdom is discerning which is which.