The seventh chapter of the Bhagavad Gita is Gyaan Vigyana Yoga . In this chapter, Krishna reveals that he is the Supreme Truth, the principal cause and the sustaining force of everything. He reveals his illusionary energy in this material world called Maya, which is very difficult to overcome but those who surrender their minds unto Him attain Him easily. He also describes the four types of people who surrender to Him in devotion and the four kinds that don't. Krishna confirms that He is the Ultimate Reality and those who realize this Truth reach the pinnacle of spiritual realization and unite with the Lord.
Being enveloped by yoga-maya, I do not become manifest to all. This deluded world does not know Me who am birthless and undecaying.OPEN VERSE
O Arjuna, I know the past and the present as also the future beings; but no one knows Me!OPEN VERSE
O scion of the Bharata dynasty, O destroyer of foes, due to the delusion of duality arising from likes and dislikes, all creatures become bewildered at the time of their birth.OPEN VERSE
On the other hand, those persons who are of virtuous deeds, whose sin has come to an end, they, being free from the delusion of duality and firm in their convictions, adore Me.OPEN VERSE
Those who strive by resorting to Me for becoming free from old age and death, they know that Brahman, everything about the individual Self, and all about actions. [They know Brahman as being all the individual entities and all actions. This verse prescribes meditation on the qualified Brahman for aspirants of the middle class. Verses beginning with the 14th speak about the realization of the unqualified Brahman by aspirants of the highest class.]OPEN VERSE