Heretic

A heretic is a person who while a Christian creates controversy, dissension, and division concerning doctrine and belief within the Orthodox Christian church. Such issues arose early in Christ’s Church, being noted in a number of the letters of the Apostles, notably in Titus, Timothy, Peter, and John.

As used in Titus, in the New Testament, the word heretic comes from the phrase hairetikon anthropon which is best translated as “one who fosters factions