What is a mezuzah and what is it used for? A piece of parchment contained in a decorative case inscribed with specified Hebrew verses from the Torah (Deuteronomy 6:4-9 and 11:13-21). A mezuzah is affixed to the door frame of every room in a Jewish home that is used for "honorable dwelling," which would exclude a bathroom. This is done to fulfill the Biblical commandment to inscribe the words of the Shema "on the door posts of your house" (Deuteronomy 6:9). Every time a Jew passes through a door with an affixed mezuzah, he or she is to kiss their fingers and touch them to the mezuzah, expressing love and respect for G-d and his commandments and reminding themselves of the commandments contained within them.