Here are couple of Jefferson quotes:
"The constitutional freedom of religion [is] the most inalienable and sacred of all human rights." --Thomas Jefferson: Virginia Board of Visitors Minutes, 1819. ME 19:416
"I am for freedom of religion, and against all maneuvers to bring about a legal ascendency of one sect over another." --Thomas Jefferson to Elbridge Gerry, 1799. ME 10:78
No man shall be compelled to frequent or support any religious worship, place, or ministry whatsoever, nor shall be enforced, restrained, molested, or burthened in his body or goods, nor... otherwise suffer on account of his religious opinions or belief... All men shall be free to profess and by argument to maintain their opinions in matters of religion, and... the same shall in no wise diminish, enlarge, or affect their civil capacities." --Thomas Jefferson: Statute for Religious Freedom, 1779. ME 2:302, Papers 2:546
Pay special attention to the last one. This is both freedom of and freedom from religion. This is what the framers intended. James Madison (a.k.a. the Father of our Constitution) steered this exact piece of legislation to passage in the Virginia State Assembly.
acludem