A mezuzah on the doorpost is a public sign of a Jewish home. If you open the decorative container of the mezuzah you will find a piece of parchment with two sets of Hebrew verses from Deuteronomy, hand-lettered in black ink. The first set opens with the words: “Hear, O Israel, the Lord our God, the Lord is one” (6:4-9). The second begins with “And it will be if you will listen diligently to all my mitzvot” (11:13-21). Both verses contain the commandment to “write these words on the doorposts of your house and on your gates,” the very mitzvah that is fulfilled by attaching these verses to one’s doorway.

On the back of the parchment, the scribe writes the Hebrew letters shin, daled and yud, one of the seven names of God that is also an acronym for the words Shomer Daltot Yisrael, He guards the doorways of Israel. But the mezuzah is not supposed to be regarded as a good luck charm. Rather, the mezuzah is meant to serve as a reminder of what is written on it–that there is one God and we have a relationship with Him–so that we might cultivate our awareness of Him and walk in His ways.

To help us remember God at all times, the mezuzah is affixed to the doorpost at the entrance to every room in our home (except for the bathroom). Although synagogues and study halls do not require a mezuzah because both already have their own innate sanctity, nevertheless mezuzot are often hung at these locations, but without a blessing. Also, we do not affix a mezuzah to a non-permanent structure, such as a sukkah. The presence of the mezuzah elevates the atmosphere of our homes and reminds us of what truly matters.