Zohar 3:22a

Jewish Mysticism
Come and see the secret of the matter. The Community of Israel [Shekhinah] does not stand before the King [Tif’eret] except by means of the Torah. Whenever earthly Israel are engaged in [the study of] Torah the Communtiy of Israel dwells with them… Thus, when the Community of Israel is aroused before the King by means of Torah, her forces are strengthened and the Holy King is glad to receive her. However, when the Community of Israel comes before the King and Torah is not found with her, her strength, as it were, is weakened.

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