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.
The Blessed Lord said: O Partha, hear how you, having the mind fixed on Me, practising the Yoga of Meditation and taking refuge in Me, will know Me with certainty and in fullness.OPEN VERSE
I shall tell you in detail of this Knowledge which is combined with realization, after experiencing which there remains nothing else here to be known again.OPEN VERSE
Among thousands of men a rare one endeavours for perfection. Even of the perfected ones who are diligent, one perchance knows Me in truth.OPEN VERSE
This Prakrti of Mine is divided eight-fold thus: earth, water, fire, air, space, mind, intellect and also egoism.OPEN VERSE
O mighty-armed one, this is the inferior (Prakrti). Know the other Prakrti of Mine which, however, is higher than this, which has taken the form of individual souls, and by which this world is upheld.OPEN VERSE