MEZUZAH
Mezuzah (me·zuʹzah) [doorpost].
Anglicized form of the Hebrew word used in the Bible generally to designate a doorjamb or doorpost. Mezu·zahʹ and the plural mezu·zohthʹ appear at Exodus 12:7, 22, 23, with reference to the sprinkling of the passover victim’s blood on doorposts, and at Exodus 21:6, regarding a slave who, desiring to remain in his master’s service, was brought up against the door or the “door-post” and had his master pierce his ear through with an awl. References are also made to doorposts of the temple constructed by Solomon (1 Ki. 6:31, 33; 7:5) and of the symbolic temple Ezekiel saw in vision.—Ezek. 41:21; 45:19; 46:2.
In modern times the Anglicized term “mezuzah” is used to denote a rectangular piece of parchment containing the Hebrew text of Deuteronomy 6:4-9 and Deuteronomy 11:13-21, generally written in twenty-two lines. The parchment is rolled up and placed in a wooden, metal or glass case that is affixed in a slanting position on the right-hand doorpost of orthodox Jewish dwellings, the upper part pointing inward and the lower part outward. The Hebrew word Shad·dayʹ (meaning “Almighty”) is written on the back of this parchment and is frequently visible through a glass-covered opening in the container. Sometimes the mezuzah case is artistically decorated. When pious orthodox Jews enter or leave a house they touch the mezuzah with the hand and recite the prayer, “May God keep my going out and my coming in from now on and ever more.”—Compare Psalm 121:8.
The use of the mezuzah is based on a literal interpretation of the command at Deuteronomy 6:9 and 11:20.