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But, of what avail to thee is the knowledge of all these details, O Arjuna? I exist, supporting this whole world by one part of Myself.

But what need have you, Arjuna, to know all this in detail? I stand, supporting this entire universe with a single portion of myself.

The chapter ends with a turn that makes all the detail seem small. Why does Arjuna need so many particulars? Krishna sustains the entire universe with just one portion of himself. If the whole world is only a fraction, then what lies beyond it is greater still. The verse both completes the teaching on divine glories and opens the door to the next chapter, where Arjuna will ask to see this cosmic form directly. Hearing about the glories has prepared him; now he will want to behold the one who holds them all.