Jefferson found in the religion phrases of the First Amendment no vague or fuzzy language to be bent or shaped or twisted as suited any Supreme Court Justice or White House incumbent. That amendment had built a wall, with the ecclesiastical estate on one side and the civil estate on the other.
Edwin Scott Gaustad (1993). “Neither King Nor Prelate: Religion and the New Nation, 1776-1826”, William B. Eerdmans Publishing Company