According to Kushner, the 13th-century text Sefer Ha-Temunah teaches that our present Hebrew alphabet is missing one letter, which will be revealed in the future, and that "every defect in our present universe is mysteriously connected with this unimaginable consonant" (p. 13). Kushner goes on to point out that the tefillin shel rosh bears a shin on each side: the regular three-tongued shin on the right side, but on the left side, a shin with four tongues. "Some suspect that this may be the missing letter whose name and pronunciation must wait for another universe" (p. 14).
And some suspect that this letter is the Hidden Mother Goddess.....in completion, completing the circle, the Mother Language of Creation.

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Shin
Letter: Shin

Meanings: Fire. Shalom, peace, wholeness. Shaddai, enoughness. Change. Simcha, joy.

Application: Experience shalom even in the midst of change. Practice feeling satisfied, filled with "enough." Cultivate joy.

Shadow: Consuming or being consumed by flames of anger, lust, jealousy, etc.

Reflection: How might I increase the amount of joy I experience in my life?

Suggested action: Practice simcha by maintaining a half-smile on your face at various times during the day. Observe how this half smile makes you feel and how it affects your interactions with others.