Read this: There were also opponents to the support of any established church even at the state level. In 1773, Isaac Backus, a prominent Baptist minister in New England, wrote against a state sanctioned religion, saying: "Now who can hear Christ declare, that his kingdom is, not of this world, and yet believe that this blending of church and state together can be pleasing to him?" He also observed that when "church and state are separate, the effects are happy, and they do not at all interfere with each other: but where they have been confounded together, no tongue nor pen can fully describe the mischiefs that have ensued." Thomas Jefferson's influential Virginia Statute for Religious Freedom was enacted in 1786, five years before the Bill of Rights.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): What didn't an established church, even at the state level, have?
unanswerable