|Chapter 2: Contents of the Gita Summarized|
akirtim capi bhutani
kathayishyanti te 'vyayam
People will always speak of your infamy, and for a respectable person, dishonor is worse than death.
Krishna explains to Arjuna, that for a respectable person like him it is better to die in battle than loose his fame and reputation as a great ksatriya. One may question why a devotee like Arjuna should be so much concerned about honor and dishonor, especially since later on Krishna Himself advises him to rise above these dualities. The reason is that at this point Krishna is addressing Arjuna as one who is pre-occupied with furtive activities, and not as a devotee.
Please read the Sanskrit Verse and the Prabhupada's Purport.