On the battle field of Kurukshetra, when Arjuna, the disciple of Lord Krishna got infatuated & forgot his duty to fight, then Lord Krishna reminded Arjuna of his duty to fight a lawful, justful war & gave him the teachings of Bhagwad Gita. Arjuna after having been taught in the path of knowledge by Lord Krishna came back to his path of duty & fought a lawful battle against the Kauravas (his enemies) & won the battle with the grace of Lord Krishna.
Bhagwat Gita: Chapter Four (4) is entitled "The Yoga of Knowledge ,as well as, the disciplines of Action & Knowledge." This Chapter has a total of 42 verses.
Verses 1 to 18 are about the Glory of God (Lord Krishna) with attributes; Karmayoga, or selfless action, described herein.
Verses 19 to 23 are about the conduct of Yogis and Sages, its glory described herein.
Verses 24 to 32 are about the different forms of sacrifices and it's fruits described herein.
Verses 33 to 42 are about the glory of Knowledge described herein.
To read complete chapter Four (4) Verse by Verse in Original Sanskrit Language Text & its English Translation.......Click here to read...........Bhagwat Gita: Chapter Four (Chapter-4)