"God makes Himself hidden"

“It can be said that all of the worlds—and, indeed, any separate realms of being—exist only by virtue of the fact that God makes Himself hidden.

... A world can exist only as a result of the concealment of its Creator”

--Rabbi Adin Steinsaltz

From The Thirteen Petalled Rose, pp. 20–21, by Rabbi Adin Steinsaltz