When the One stirs, it awakens in itself the Divine Mind. This is the first emanation of the One.
The One is the unmanifest, the Divine Mind is the manifest. The Divine Mind is not different from the One, it is different only in the sense of being individualized and awakened. It is the active aspect of the One, the first perspective that the One has given itself.
"Seeking nothing, possessing nothing, lacking nothing, the One is perfect and, in our metaphor, has overflowed, and its exuberance has produced the new…" - Plotinus
All of reality is a divine outflowing of the One.
Upon awakening, the Divine Mind finds itself full of wonder. It desires to experience itself. To gain that experience, the Divine Mind explores all of the possibilities of existence, in physical dimensions and beyond.
The Divine Mind is pure Creativity. It explores the infinite expanses of the One and manifests the unmanifest.
"Out of the Ocean of infinite possibilities present in the ineffable, undifferenced intelligence of the One, there pours forth a radiant display of glorious revelations - the Divine Mind and its Ideas." - Astronoesis
This infinite exploration is the eternally-becoming body of the Divine. It is the One becoming the Many.
"Thus the Divine Mind, in the act of knowing the Transcendent, is a manifold." -Plotinus
The Divine Mind becomes Living Substance as it twists and turns itself into the myriad forms of existence. Each fragment of itself however retains the image of the Whole. "As above, so below". Everything is contained within everything else. The Living Soul of the Divine Mind pervades all reality.