Krishna's central teaching of the entire Bhagavad Gita is given in the second chapter. The very world for the world in Sanskrit, Jagat, means Gachati. Wealth goes, youth goes, power goes, fame goes, health goes. Because it is Jagat, that which goes. So that's how Krishna came to be driving a chariot, Arjuna's chariot. And now Arjuna is seeming to back out of the whole deal. He says to Krishna, I won't fight because of these reasons. Here it starts the second chapter called Sankea Yoga.