Were 9/11 -- and the Financial Crisis -- Predicted in the Bible?

In ancient Israel, God commanded his people observe a "sabbath year" every seven years.  In his book, "Mystery of the Shemitah", Jonathan Cahn says this command is still in effect today -- even if we aren't observing it.  In fact, the largest drops in the stock market occured seven years apart -- on the last day of the "Shemitah" year.  Could something happen again?