The ninth chapter of the Bhagavad Gita is Raja Vidya Yoga. In this chapter, Krishna explains that He is Supreme and how this material existence is created, maintained and destroyed by His Yogmaya and all beings come and go under his supervision. He reveals the Role and the Importance of Bhakti (transcendental devotional service) towards our Spiritual Awakening. In such devotion, one must live for the God, offer everything that he possesses to Him and do everything for Him only. One who follows such devotion becomes free from the bonds of this material world and unites with the Lord.
O son of Prtha, the noble ones, being possessed of divine nature, surely adore Me with single-mindedness, knowing Me as the immutable source of all objects.OPEN VERSE
Always glorifying Me and striving, the men of firm vows worship Me by paying obeisance to Me and being ever endowed with devotion.OPEN VERSE
Others verily worship Me by adoring exclusively through the sacrifice of the knowledge of oneness; (others worship Me) multifariously, and (others) as the multiform existing variously.OPEN VERSE
I am the kratu, I am the yajna, I am the svadha, I am the ausadha, I am the mantra, I Myself am the ajay, I am the fire, and I am the act of offering.OPEN VERSE
Of this world I am the father, mother, ordainer, (and the), grand-father; I am the knowable, the sanctifier, the syllable Om as also Rk, Sama and Yajus.OPEN VERSE