The nuts and bolts of Sam's reasoning can be summed up with this attitude assessment:
How often do you hear someone speculate about why God allowed them to wake up in the morning? Or why God gave them a roof over their head? Or provided them with good health and daily sustenance? Just about never. Why? Because we consider these things to be our due. If we were a little less self centered I think we'd realise that we don't deserve any of the good in our lives.Consider me humbled.
Scot McKnight at the Jesus Creed lists 10 books on eschatology as a balance to the dispensationalism premillennialism of the Left Behind books. (HT: Bob at Mr. Standfast) McKnight gets extra points in my book for mentioning George Eldon Ladd's The Blessed Hope.