What is the theme in Embraced by the Light by Betty Eadie?

Near death experiences is a theme in the book. Since the beginning of time there has been talk of near death experiences, of seeing a bright light and moving through a tunnel, events that take place when a person has been declared clinically dead and then is returned to life through medical intervention with stories regarding events experienced during this time of death. Many of these experiences have been dismissed by experts as a misfiring of the brain during the crisis that has led to clinical death or of simple imaginings experienced in moments of severe stress. However, there are those who believe in these experiences and many more who want to believe.