They all have cites. Madison's
Against Religious Assessments is well-known, as is Jefferson's
Letter to the Danbury Baptists. (Barbarian checks)
Against Religious Assessements
https://founders.archives.gov/documents/Madison/01-08-02-0163
Letter to Danbury Baptists
https://www.loc.gov/loc/lcib/9806/danpre.html
Were there any others you couldn't find?
As you see, two men most responsible for the Bill of Rights clearly indicated a need for a wall of separation between church and state. As you also see, Madison cited in detail why government support of religion is intrinsically evil and harmful to both.
No, they protected individuals from state involvement in the church. They wanted the government completely out of religion.
In fact, Jefferson quite bluntly stated that his statutes of religious freedom were intended to equally protect Christians, Jews, Muslims, and "Hindoos." Since many of the founders were deists, not christians, it's not surprising that was so.
And of course, Madison, who was a committed Christian, was one of the strongest opponents of establishing Christianity in the new nation.
Yeah, I remember the old boards, where things where threaded in branching mode. Seems to be completely gone now.