It is worth noting that this exact sequence (the Chaldean sequence) of the seven classical celestial objects follows the same paths as the Serpent of Wisdom coiled about the Tree of Life in the Hermetic Qabalah. This is the western analogue to the Hindu notion of Kundalini, which shares the same serpentine symbolism; both of which represent the process of the psychological maturation of man.

See Liber 777 Col. VII [0], Key Scales 3 through 9 inclusive. Also note that Key Scales 4 through 9 in Col. XCVII, excluding Saturn in old age, correspond to the "Ruach," "soul," "mind," or (one could say) "post-bicameral ego" of man.

[0] https://ia902906.us.archive.org/22/items/Liber777Revised/Lib...