North Carolina Constitution of 1776

This truth is self-evident: the United States was founded by Christians for Christians. The founders had no intention of other religions being treated in the same fashion as Christianity. Freedom of religion was was established so that no denomination would have supremacy over another denomination as it had in Europe. 

Section 32. "That no person who shall deny the being of God, or the truth of the Protestant religion, or the divine authority of either the Old or New Testaments, or who shall hold religious principles incompatible with the freedom and safety of the State, shall be capable of holding any office, or place of trust or profit, in the civil department, within this State."

A listing of other State Constitutions that clearly articulate the Christian religion can be found here.
Cary Jay Vaughn