For nothing is separate from G‑d, except insofar as His Countenance is concealed.
Only then can created beings perceive themselves as distinct entities (as explained in ch. 22). Since there is no such concealment when one studies the Torah, one attains thereby a perfect unity with G‑d — a unity comparable to that of G‑d's speech and thought with Himself prior to their revelation as "speech" and "thought", but as they are contained within Himself.