Book One Of Samuel, Chapters 16-31

I find interesting that the "character" of God keeps changing so suddenly. This one is almost a third person as he is "The Lord or Lord" rather than "The Lord God". Also oddly in chapter 16 verse 7 he seems to be able to "read" minds, while in Genesis Chapter 3 verse 9 he asks where Adam and Eve are, meaning he is less perceptive of powerful than his earlier and later counterparts, which just makes this text more confusing as they are inconsistent in their character, even though they are supposed to be the same person. The Lord also seems to have a darker persona as in chapter 16 verse 14 he curses Saul with an evil spirit.

I wonder about the "evil spirit". Assuming these were real historical people, I would conjecture that it could be a form of epilepsy, http://en.wikipedia.org/wiki/Epilepsy, and when the times when the spirit visited him were just episodes, and misunderstood and assumed to be of supernatural origin. I would liken it to Julius Caesar's epilepsy, which was believed to be a curse from the gods. http://en.wikipedia.org/wiki/List_of_people_with_epilepsy#Miscellaneous