How many times have we read letters by some "enthusiasts" who tell us that the Lord has already come or is coming at any moment? Jehovah's Witnesses try to tell us that he already came in the early 1900s. Others say he came in 2000! There are always some who try to get you all excited about our Lord's coming. Paul warns us not to be alarmed by these words. They have not come from God or from any of his representatives.
Of course, our Lord will come some day. But Jesus told us on earth that even he did not know the hour or the day! Then why do we believe every idiot?