Lord Krishna said: I shall explain to you again the highest of all kinds of knowledge, on actualizing which, all ascetics have reached the state of supreme fulfilment.
Unlike the previous chapter, beginning with six questions from Arjuna, this commences with Krishna himself promising to disclose the supreme wisdom that can lead seekers to fulfilment.
Knowledge alone bestows spiritual perfection, by purifying and refining the mind and intelligence. This is a point seekers should not miss. Whatever be the initial practice, the ultimate spiritual fulfilment can come only through doubtless knowledge. Ignorance can be removed only by knowledge.
By extolling what he is going to say, Krishna is inspiring Arjuna to hear him with more attention.