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Prowess, splendour, firmness, dexterity and also not fleeing from battle, generosity and lordliness are the duties of the Kshatriyas, born of (their own) nature.

Valour, vigour, fortitude, skill, not fleeing in battle, generosity and the bearing of a leader: these are the work of a warrior (kṣatriya), born of his nature.

The work of the warrior (kṣatriya), Arjuna's own class, includes courage, vigour, steadiness, skill, refusing to flee in battle, generosity, and the bearing of a ruler. Each of these speaks directly to Arjuna's situation. Not fleeing from battle is exactly what he had considered at the start of the dialogue. By naming these as the natural duties of a warrior, Krishna reminds Arjuna of who he is and what his nature calls him to do.