How does Chapter 51 use the Bhagavad Gita to explain the difference between destroying delusion and attaining knowledge?

Chapter 51 delves into a subtle spiritual point by referencing the Bhagavad Gita. It highlights the dialogue between Shri Krishna and Arjuna at the end of the eighteenth chapter. As the source explains, Krishna specifically asked Arjuna if his delusion had been destroyed, not if he had attained knowledge. In response, Arjuna confirmed, "My delusion has vanished." Chapter 51 emphasizes that delusion (moha) is simply another name for ignorance, and its destruction is the crucial step. The text points out that Arjuna did not claim to have 'attained' knowledge, but rather that the state of delusion had ceased to exist, which is the essential outcome.