Now the Spirit of Yahweh departed from Saul, and an evil spirit from Yahweh troubled him.
"This paragraph is not intended as a detailed sequel to  1 Samuel 16:1-13. It is a panoramic picture of events to be detailed in the next few chapters."[11]  Bible students should not be confused by this.  This type of historical writing is found frequently in the Bible, especially in the Book of Revelation.  Once this is understood by believers, the shouts of critics about `contradictions' `duplicate accounts,' etc. appear in their true character as absolutely unfounded.  Philbeck's allegation that we have, "Two accounts of David's introduction to Saul,"[12] is due solely to a failure to appreciate the prolepsis.