Lord Krishna said: I shall explain to you this most secret knowledge, as you are free from envy. By gaining this knowledge, along with its realization, you will be totally freed from all kinds of inauspiciousness.
Krishna steps into a new phase of exposition, without any prompting from Arjuna. Wholesome and insistent he is in fulfilling the spiritual Teacher’s role.
Grief having been redressed, Arjuna is posing as a full seeker of śreyas, supreme felicity. This is solely a spiritual quest, Krishna meets in all fullness, raising the dialogue from a mere discussion on fighting. Krishna reinforces Arjuna with far greater knowledge.
Krishna is going to expose besides knowledge, vijnana, experiential knowledge, the crowning spirituality! Self-knowledge is not like any other knowledge. It is the knowledge about one’s own real identity. It has to be realized as such.