We arrive at the concluding chapter of the Bhagavad-gītā, of Krishna’s eighteen yoga teachings. This chapter is the longest in the Gītā (slightly longer than chapter 2). It serves partly as a reiteration and re-emphasis of previously expressed ideas, but also as an elaboration on important principles in terms of the three modalities of nature. It is also here that we find a dramatic crescendo near the chapter’s end, in Krishna’s final exhortation to Arjuna (and to all would-be yogīs) to find refuge and ultimate yoga success in him, yogeśvara, the master of yoga.
A part of the puruṣa lies down within the water of the universe, from the navel lake of His body sprouts a lotus stem, and from the lotus flower atop this stem, Brahmā, the master of all engineers in the universe, becomes manifest.Śrīmad-Bhāgavatam 1.3.2