Jefferson was biblically correct but what is missing of course is the context. The Church of England and catholic church ruled the world in those days with an Iron fist. They fought for freedom from that type of opression. Biblically both curches and others where apostate and the clergy was elevasted above the layperson. You cannot read too much into it and certainly not spin it with modern context that they where anti religon. The net effect of their expirience was very wise that the govt. should not influence what religon it's people practice.