Pesiqta de-Rav Kahana, 4:4, pp. 65-66

Jewish Mysticism
“A man’s wisdom lights up his face” (Eccles. 8-1). R. Yudan said- Great is the power of the prophets who compare the image of the Dynamis above to a human image. “I heard a human voice from the middle of Ulai calling out” (Dan. 8-16). R. Judah ben R. Simeon [said]- There is another verse that is clearer than this- “and on top, upon this semblance of a throne, there was the semblance of a human form” (Ezek. 1-26). “And the strength of his face will change” (Eccles. 8-1). He changes from the attribute of justice to that of mercy with respect to Israel.

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