Prefixes in Hebrew Prefixes in Hebrew There are several prefixes in the Hebrew language which are appended to regular words to introduce a new meaning. In Hebrew, the letters that form those prefixes are called "formative letters" (Hebrew: אוֹתִיּוֹת הַשִּׁמּוּשׁ, "Otiyot HaShimush"). Eleven of the twenty-two letters of the Hebrew alphabet are considered "Otiyot HaShimush". These letters are Aleph (א), Bet (ב), He (ה), Vav (ו), Yud (י), Kaf (כ), Lamed (ל), Mem (מ), Nun (נ), Shin (ש), and Tav (ת). A mnemonic to remember these letters is איתן משה וכלב ("Eitan, Moshe, v'Kalev"), which translates to "Ethan, Moses, and Caleb." Prefixes in
Hebrew alphabet letters "came with the Israelites from Ashur [Assyria]"); others attribute mystical significance to the letters, connecting them with the process of creation or the redemption. In mystical conceptions, the alphabet is considered eternal, pre-existent to the Earth, and the letters themselves are seen as having holiness and power, sometimes to such an extent that several stories from the Talmud illustrate the idea that they cannot be destroyed. The idea of the letters' creative power finds its greatest vehicle in the Sefer Yezirah, or "Book of Creation", a mystical text of uncertain origin which describes a story of creation highly divergent