Hebrew, “crown.” Keter is the uppermost of the Sefirot of the middle line or kav emtsaee (Hebrew for “middle line”), the line of mildness or balance in the Tree of Life. In the Zohar, Keter is known as “the most hidden of all hidden things,” being incomprehensible to man. Only through God may the incomprehensible be known. Keter teaches us humility, “the last shall be first, and the first last” (Matthew 20:16). To see the world through the Sefirot Keter:
• one’s thoughts should be pure
• one’s temperament should be gentle
• one’s face always shining
• one’s ears should listen to hear the good in all places
• one’s eyes should not seek evil, always looking for the good in all things
• one’s nose should be free from the breath of anger
• one’s mouth speaking nothing but good, righteousness.
We see Keter through Binah, which is a reflection of this Sefirot as seen by the human soul once we are born again.
See Book of Remembrance 13:15, 29:7-8, 33:1-4.