All date-setters have to deal with Matthew 24:36 where Jesus, speaking of His return, said, "But of that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father alone."
Harold Camping, owner of the Family Radio Network who has set the date for the Lord's return at May 21, 2011, dismisses this statement as being no longer true. He says it all changed in September of 1994 when the Holy Spirit began to be poured out and new revelations concerning the end times began to be given to true believers. He argues this is in fulfillment of a promise given in Ecclesiastes 8:5 where it states that "a wise heart knows the proper time and procedure."
Once again, Camping just fishes around for some words to substantiate an unrelated point. Ecclesiastes 8:5 is specifically talking about being obedient to political leaders. It says that a wise heart knows the proper time and procedure to obey a royal command. The fact that it is so specific is the reason that Camping only quotes the last half of the verse.
Camping also quotes Daniel 12:4 & 9. These verses state that certain end time prophecies will not be understood until the time comes for them to be fulfilled. This is certainly true with regard to prophecies that depend upon historical developments (like the re-establishment of Israel). The verses also relate to prophecies that rely on modern technology (like the whole world looking upon the dead bodies of the two witnesses in Jerusalem). But these verses certainly do not apply to Jesus' statement in Matthew 24:36 where He stated without reservation that no one can know the date of His return.
Camping also points to 1 Thessalonians 5:1-5 which says that the Lord will return "like a thief in the night," but not as such for "brethren" who are "sons of light and sons of day." Camping argues that these verses mean that true believers can know the date of the Lord's return. But that is not the meaning of this passage. Instead, it simply means that believers can know the season of the Lord's return (and not the date) because we have been given signs to watch for.
In the next part of this series examining the madness of Harold Camping's date-setting, we'll look at why he is ultimately the leader of a cult.