A mezuzah (plural: mezuzot) is a response to the mitzvah to write these words on the doorposts of your house and upon your gates. Mezuzot are small containers with scrolls inside them that can be affixed to doors and provide protection for the scroll.
This article is a stub. You can help the Judaism Wiki by expanding it. Please note, the term "stub" is not indicative of length, it simply means that there is more to be said on a topic. Even long pages can be stubs, and even short pages can be complete.