The Bible consistently warns the church of false teachers, false prophets, doctrines of demons, and calls for the church to contend and watch.  Yet, the church tends to remain silent or gets seduced by these doctrines.  Every New Testament book with the exception of one (Philemon) makes reference to false teachers or false prophets yet, it is seldom talked about in the pulpits which leads to some Christians being led astray from God's plumb line.