“The church has always had to deal with heresy, and the church has always made a distinction between heresy and error. This is a distinction not of kind but of degree. The church is always plagued with errors or at least some members who are in error in their thinking and in their beliefs. But when an error becomes so serious that it threatens the very life of the church and affects the essentials of the Christian faith, then the church has to stand up and say, “This is not what we believe. This false belief is heresy and cannot be tolerated within the visible church.” Historically, that’s what has happened with conflicts over theology.” -R.C. Sproul, What Is The Church?