Jewish Mysticism
Therefore I will explain the ten sefirot, the divine principles, according to the kabbalah, so that one may cleave to them, as it is written, “This is my God and I will glorify Him” (Exod. 15-2), [the word we-’anvehu, “I will glorify Him,” can be read as] I and He (’ani we-hu’). When one cleaves to them [the sefirot], the divine Holy Spirit enters into him, in all his sensations and all his movements.

Translated by Elliot Wolfson in Through a Speculum that Shines- Vision and Imagination in Medieval Jewish Mysticism, Princeton- Princeton University Press, 1994.