Krishna then explains ‘karma-yoga’, reaction-free devotional work, and clears up Arjuna’s mistaken idea that all work is fruitive and leads to bondage.

Krishna explains that Arjuna should fight, for avoiding sinful reactions though devotional work is better than attempting to escape reactions though renouncing work.

Krishna also instructs Arjuna to fight to set the proper example of duty. Krishna therefore tells Arjuna to fight, but with knowledge and detachment, without falling victim to his own attractions and aversions.

Then, in answer to Arjuna’s question on the cause of a soul’s being impelled to improper action or neglect of duty, Krishna names the enemy: lust. He then recommends Arjuna

to regulate his senses, become fixed in his pure identity as a servant of Krishna, and thereby avoid lust’s control. Then, with spiritual strength and deliberate intelligence, he should conquer that forceful enemy — lust.

Krishna has recommended that Arjuna fight in full knowledge of Him, the Lord, explaining different aspects of transcendental knowledge. First Krishna explains attaining knowledge.

Then after successively explaining His appearance and then His mission, Lord Krishna explains His devotional service as the goal of his several reincarnations in sevearal ages on earth. Krishna next explains the soul’s relationship with Him as eternal His part and parcel, which one must approach a bona-fide spiritual master or a yogi to learn. — Bhagavad-gita.us