The Bhagavad Gita, Chapter 1, Verses 37 ... 43

Gita Post #11  Arjuna's knowledge of dharma is so limited to the family morals and traditions that he goes deep into what damage will the war inflict on the social set up. He is right about the destruction of the society a war will cause; but he worries he and all the destroyers of family traditions will become sinners and unfit to live in heaven. 

The Bhagavad Gita, Chapter 1, Verses 8 ...11

Gita Post #6  Drona and Kṛpa on the Kaurava side are seasoned warriors of extraordinary skills, and Karna is ever confident to challenge Arjuna in archery. All the same, Duryodhana is hopeful of winning the war and the Kingdom only as long as Bhīshma is alive, so he wants everybody to protect the old Kuru alone.

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