[ש] The twenty-first letter of the Hebrew alphabet. It symbolizes fire. The shape of shin displays the three fires or three Iods (Father, Son and Holy Spirit), the Holy Triamazikamno, the three wicks (three Vavs) within the Nun or Divine Essence of God (El-Shaddai). Its Kabbalistic numerical value is 300. Shin is one of the three mother letters (אמש).