Shin (Sin): The Twenty-First Letter of the Hebrew Alphabet
Raskin, Rabbi Aaron L.
"The three lines of the shin may be interpreted as three general dimensions of a human being: Kesser (will and pleasure), the intellect, and the emotions....
"The reish, at times poor and at times wicked, has the ability to do teshuvah. It can awake from its slumber and repent. The reish can truly be transformed into the rosh: the head of the Jewish people....
"We all have the ability to transform the irrational to the superrational, thus directing our thought, our speech, and our action solely toward G?d and holiness....
"According to the AriZal, the ayin is a vav contained in a nun.
The nun represents humility. The vav signifies Torah, which descends from Heaven to earth in its inherent design of a hook or a chute.
Vav also has the gematria of six. This represents the Six Orders of the...
"The mission for all of us is to reveal and draw G?d’s infinite light down into this world so that we can see the true reality of the world—that everything is G?dliness and G?dliness is everything....
"The word mem stands for mayim, which means water.
Torah, the most vital element in our spiritual lives, is referred to as water, as it states: '...There is no water but Torah.'...
