A heretic is a N.T. human evil character who publicly denied or misrepresented some teachings of the apostles and established doctrines of the Church, while still holding some teachings or doctrines to be true. Their object is to disturb the life of the church and those within it, shaking their confidence and spoiling the work of Christ. The gospels were written in great measure as a means to answer the words and teachings of the heretics in the early N.T. church.