The concept of the separation of church and state is a cornerstone of American democracy, yet it is not explicitly stated in the Constitution. Instead, it is an interpretation derived from a single letter penned by Thomas Jefferson in 1802. In this essay, we delve into Jefferson’s original intent for this "wall of separation" and challenge the common misinterpretation that seeks to exclude religious influence from public life. We argue that the wall was a protective measure, a safeguard for religious freedom, and that the church has a vital obligation to participate in public discourse and social change.