Black Fire upon White Fire: You cannot See with the White but only with the Black
“She opens פִּיהָ (piyah), her mouth, with wisdom (Proverbs 31:26)—ב (bet) of בְּרֵאשִׁית (Bereshit), In the beginning (Genesis 1:1), as they have established” (Zohar 1:145a).
“The Torah was given in black fire upon white fire, to include right in left—and left turning into right, as is written: From His right hand, a fiery law for them (Deuteronomy 33:2)” (Zohar 2:84a).
“Torah was given in fiery flashes, all in aspect of fire, written in white fire upon black fire, letters flying and rising through the air” (Zohar 2:226b).
“Rabbi Ḥaninah said: the blessed Holy One says: in the eyes you possess there is white and black and you cannot see with the white but only with the black” (Bemidbar Rabbah 15:7).