Hebrew lesson with Sr. Michele.Â Shalom is the Word which she used for teaching us the first letters of the Hebrew Alphabet . â€œShalomâ€ The letter shin stands for fire. The letter lamed stands for learning, study and teaching. The letter mem stands for water. As fire and water are eternal enemies so is the letter lamed which stands for learning, study and teaching, and also the letter for knowledge by heart (Lev), the one who brings together two opposites, two enemies, water and fire and makes peace between them.