The Hebrew word Mezuzah, which literally means "door post" is the word that appears in the Torah text"..write (this command-the Shema) on the mezuzah (door post) of your house and upon your gates.The Mezuzah is comprised of two parts: the container or box, and the parchment. The container may be made of any kind of material and is inscribed with the Hebrew letter "shin", a symbol of the Divine (the first Hebrew letter of Shaddai). Therefore when a Jewish family places the mezuzah on their dwelling, they are in effect Jewish law) prescribes in detail the affixingplacing the name of God, El Shaddai, at every entry to their dwelling. The second and most important part of the mezuzah is called the klaf (parchment) on which is inscribed by hand in Hebrew the words of the commandment in Deuteronomy 6:4-9 which begins "Hear O Israel the Lord our God, the Lord is One" The mezuzah silently declares "You are under the authority of the Torah, and wherever you may be, your life must demonstrate God's righteousness and holiness, the intergrity of His morality."(Jewish law) prescribes in detail the affixing of mezuzot on doorposts. Since almost every Jewish home has a mezuzah on its front doorpost, it has historically been a way of recognizing a Jewish home.