Why Do We Bless Over the Mitzvah of Mezuzah If It Is Also Associated with Protection?

This source-based Torah study examines the question: Why Do We Bless Over the Mitzvah of Mezuzah If It Is Also Associated with Protection? It follows the canonical Hebrew discussion through the parasha and classical Jewish sources. The localized layer is a concise discovery summary rather than a full translation of the article body; any halakhic, historical, theological or practical claims remain source-framed and subject to the canonical review status.