My hairdresser lets me keep an OBCZ in her shop, and when she recently cleaned some books off her shelf, this is one of the ones she gave me. This is the first book in the Left Behind series.

From the cover -
In one cataclysmic moment, millions around the globe disappear.
Vehicles, suddently unmanned, careen out of control. People are terror stricken as loved ones vanish before their eyes.
In the midst of global chaos, airline captain Rayford Steele must search for his family, for answers, for truth. As devastating as the disappearances have been, the darkest days may lie ahead.