The Past or The Coming Future

The first book in a three book series about the End Times or Last Days tells the story of things most likely to take place just before the Rapture.  This novel follows the life of an old couple by the name of Tom and Debbie.  Their oldest son becomes a Christian and he tells his parents about a thing called the Rapture.  The couple does not believe that people can disappear into thin air and they say it is a Christian myth.  After years of unbelief, the Rapture finally occurs and the older couple realize the truth of what their son had told them in the previous years.