There are only two times when it is proper to deal with controversial subjects in the church: (1) when the church is bothered with them, and (2) when it is not. That may sound a bit "corny" but it is just plain fact. The philosophy that we should never trouble trouble until trouble troubles us may sound reasonable, but it is borne out neither in scripture nor history.
Religious controversy is prima face evidence of error. It does not always mean that one side is right and the other wrong, for both may be wrong. But it is a singular fact that both cannot be right because truth never contradicts truth. That means that all Christians must dust off their Bibles and find out just what is the truth. Paul admonished, "Be not unwise but understanding what the will of the Lord is" (Eph. 5:17). So there is no room for the excuse, "Well I just can't understand." If both can't be right, then every Christian is duty-bound to find out which one is, or if either is.
Religious error is like a physical disease, as long as it exists anywhere in the world, it poses an insidious danger to Christians everywhere in the world. Error is like a disease. It does not usually remain confined to one particular area. It has cousins, uncles, aunts, grandparents, grand children, and even good friends, and through them it may travel right to our front door (it often uses the back door!) and creeps in unawares (Jude 3). Paul spoke of false teachers' words as eating like a cancer (2 Tim 2:17): "And their word will eat as doth a canker: of whom is Hymenaeus and Philetus." (Don't fail to notice that Paul called the names of the false teachers, those spreading the disease. This is important to know so they can be quarantined!)
The world would have been dead from smallpox long ago had every community waited to vaccinate its citizens until it had an outbreak of the disease. The basic theory of immunization is to vaccinate before the disease strikes. The same thing holds true with pernicious religious error. Paul warned the Ephesian elders of dangers that lay ahead, Acts 20:28-29. "Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood. For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock."
The church or the preacher that delays dealing with error until it strikes really is sacrificing many to the error; for often, once it strikes it is too late to save some. History proves human pride makes it difficult to reverse a commitment. All Christians have a responsibility to stand for truth and against all error. Preachers must guard that which is committed to their trust (1 Tim. 6:20) and elders are with sound doctrine to exhort and convince the gainsayers (Tit. 1:9). He who will not defend the truth is out of harmony with God's word, and fails to honor his trust.
- by James P. Needham