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He who in truth knows these manifold manifestations of My Being and (this) Yoga-power of Mine becomes established in the unshakable Yoga; there is no doubt about it.

One who truly knows this manifest glory (vibhūti) and power of mine is joined with unwavering yoga; of this there is no doubt.

Krishna names the two themes of the chapter: his vibhūti, the manifest glory by which he appears in the world, and his yoga, here meaning the power by which he brings it forth and holds it together. To know these tattvataḥ, in their true nature, is to be joined with a yoga that does not tremble. The phrase unwavering yoga answers Arjuna's earlier fear that the mind is restless and hard to hold. Krishna suggests that steadiness comes not only from discipline but from seeing the divine in everything one meets, so that the mind has nowhere to fall away to.