But of that day and hour no one knoweth, not the angels of heaven, but the Father alone. And as in the days of Noe, so shall also the coming of the Son of man be. For as in the days before the flood, they were eating and drinking, marrying and giving in marriage, even till that day in which Noe entered into the ark, And they knew not till the flood came, and took them all away; so also shall the coming of the Son of man be. Then two shall be in the field: one shall be taken, and one shall be left. Two women shall be grinding at the mill: one shall be taken, and one shall be left.
Usually that would be the end of it, since it sufficiently answers Rev. Camping. But the rest of the chapter is just as worth reading:
Watch ye therefore, because ye know not what hour your Lord will come. But know this ye, that if the goodman of the house knew at what hour the thief would come, he would certainly watch, and would not suffer his house to be broken open. Wherefore be you also ready, because at what hour you know not the Son of man will come.
Who, thinkest thou, is a faithful and wise servant, whom his lord hath appointed over his family, to give them meat in season. Blessed is that servant, whom when his lord shall come he shall find so doing. Amen I say to you, he shall place him over all his goods. But if that evil servant shall say in his heart: My lord is long a coming: And shall begin to strike his fellow servants, and shall eat and drink with drunkards: The lord of that servant shall come in a day that he hopeth not, and at an hour that he knoweth not: And shall separate him, and appoint his portion with the hypocrites. There shall be weeping and gnashing of teeth.
Even though this false prophecy has been widely regarded as a bad move, one positive that can be taken from it is that the people who believed it prepared for the Judgment by repenting of their sins and commending themselves and their families to God's mercy. They might not have otherwise done that. Even if their hope for that particular day was misplaced, fact is there will be a Judgment and we all have to be prepared for it. The temptation for those who don't believe it is to laugh at those who do. We all need to pray for those people though, especially those who spent their life savings spreading this message or quitting a job or some other drastic measures that they will now have to live with. The temptation to despair will probably be great for these souls. There's nothing funny about that. As for the rest of us, are we ready to meet God? Are we doing the work God has given us diligently? Is there something we have been over-indulging in ourselves? are we at the very least in a state of grace? Be you also ready.