Check out Eddie Snipe's great post on why May 21 was not the day of our Lord's return.
Why the rapture won’t happen today
Written By: Eddie Snipes - May• 21•11
The claim behind the prediction of the rapture:
Watching the followers of Pastor Camping explain the rapture is disheartening. Several of them have stated they quit their jobs and planned their finances to run out today, May 21st. As his people stated in an interview, “There is no plan B.”
According to Camping’s statements in an interview, the rapture is to occur exactly 7,000 years after the flood. Today is that date by Camping’s calculations.
His reasoning is that the Apostle Peter said, “With the Lord a day is like a thousand years.” Since God said, “I will send a flood in seven days”, the earth will end 7,000 years from the date of that statement. However, people seem to forget the rest of Peter’s statement, “and a thousand years is like a day.” Now if we apply the same logic to the second half of the verse, calculations suddenly don’t make sense. Perhaps the point of Peter’s statement isn’t a coded message, but a reminder that time is not a boundary to God. Whether it’s a thousand years, or a single day, God is there and unaffected by time. We are bound by time, He is not.
Read the rest here.