Tale-bearing emits a threefold poison; for it injures the teller, the hearer, and the person concerning whom the tale is told. Whether the report be true or false, we are by this precept of God's Word forbidden to spread it. The reputations of the Lord's people should be very precious in our sight, and we should count it shame to help the devil to dishonour the Church and the name of the Lord. Some tongues need a bridle rather than a spur. Many glory in pulling down their brethren, as if thereby they raised themselves. Noah's wise sons cast a mantle over their father, and he who exposed him earned a fearful curse. We may ourselves one of these dark days need forbearance and silence from our brethren, let us render it cheerfully to those who require it now. Be this our family rule, and our personal bond--SPEAK EVIL OF NO MAN.
The Holy Spirit, however, permits us to censure sin, and prescribes the way in which we are to do it. It must be done by rebuking our brother to his face, not by railing behind his back. This course is manly, brotherly, Christlike, and under God's blessing will be useful. Does the flesh shrink from it? Then we must lay the greater stress upon our conscience, and keep ourselves to the work, lest by suffering sin upon our friend we become ourselves partakers of it. Hundreds have been saved from gross sins by the timely, wise, affectionate warnings of faithful ministers and brethren. Our Lord Jesus has set us a gracious example of how to deal with erring friends in His warning given to Peter, the prayer with which He preceded it, and the gentle way in which He bore with Peter's boastful denial that he needed such a caution. ~ C.H. Spurgeon
The key thing to remember in this is the Lord's people. Not all who profess Christ are true Christians. The Bible makes it clear to expose the heretics and wolves, which are running rampant within our society today. What about you? Are you sure of your salvation? When a Christian points out the Bible teaches to examine yourself daily, do you become defensive or offended? If you do, then that is a sure sign you truly need to. The path is narrow, the way is filled with trials and persecution but He is greater than who is in the world.