This article seeks to show when theological error becomes heresy. It explains what are the fundamental doctrines of Christianity, and the distinctions therein between error and heresy.
Should we only use biblical terms in order to stop heresy and promote sound doctrine? This article maintains that since words are a means of communicating ideas, and ministers are called to explain and preach the word of God, ministers should be free to use terminology that will help in understanding biblical doctrine.
Looking at the Council of Chalcedon, this article shows how this council was able to clarify the Apollinarianism, Nestorianism, and the Eutychianism in the controversy on the human and divine nature of Christ. Though these heresies dated before Chalcedon, the author shows that heresy is necessary as it helps to advance orthodoxy.