ARTICLE VI, CLAUSE 3

Here's a nice resource for the debates about the "no religious test" clause of the Constitution.

A sample:

JANUARY 13, 1788
In the list of the signers of the protest of the minority of the Convention against the Federal Constitution, we find six (and three of them the only speakers against it in the Convention)' whose names are upon record as the friends of paper money, and the advocates for the late unjust test law of Pennsylvania, which for near ten years excluded the Quakers, Mennonists, Moravians, and several other sects scrupulous against war, from a representation in our government.


SOURCE: Article written by "A Citizen of Philadelphia," published in the Pennsylvania Gazette, January 23, 1788. The Documentary History of the Ratification of the Constitution, Vol. II. Ratification of the Constitution by the States, Pennsylvania, Edited by Merrill Jensen, Madison State Historical Society of Wis, 1976, pp 658.