You don't know what you're talking about.
Jefferson and Madison supported laws requiring the honoring of the sabbath under penalty of law.
Jefferson spent from the public treasury to build missions and supply them with the word of God.
52 of 55 founders of this country were unabashed Christians who were informed by their bibles and their God.
The Constitution regobnises and pays homage to the the fourth commandment in it's admonition to the executive not to do business on Sunday.
The men who signed affixed their signatures directly below the words "In the YEar of Our Lord".
The wall of separation was built by Justice Black, not Thomas Jefferson and the frogs in the slow boil pot go merrily on their way boiling while the Blacks of the world continue to usurp powers never granted to them in the COnstitution.
Have a nice swim.