The concealed Da’at, the Da’at that illuminates in the head, the extending Da’at It is written, “for Hashem is an El of knowledge” (I Shmuel 2:3). The word Knowledge surely is in the plural, because Zeir Anpin has three kinds of knowledge (Da’at). 1. It is the brain of Da’at, because in Da’at are all the palaces filled as written, “by knowledge are the chambers filled.” 2. Another Da’at corresponds to it, which is not manifest but is gradually included in it in secret. 3. Da’at that shines on the brains and expands throughout the brain but not into the body.