Kabbalah sobre Números 6:25

When the face of Zeir Anpin shines with the whiteness, that is, Chesed, of Atika, its whiteness, which is Chesed, covers over its redness, which is Chochmah of the left and everything is illuminated. Then it is written, “Hashem make his face shine upon you” (Bemidbar 6:25). When wicked people abound and judgments are hanging over the world, everything is closed, that is, all lights are sealed and do not shine. Redness, which is judgment, spreads over the face and covers the white, which is mercy. Everything then is in a state of judgment, and it is written, “The face of Hashem is against those who do evil” (Tehillim 34:17). Everything depends on it, which is the reason the face is always used for testimony.