See this excellent 7-minute video discussing the origins of Dispensationalism and the idea of a secret rapture, from NT Professor Ben Witherington III.
http://www.patheos.com/blogs/bibleandculture/2014/10/08/the-rapture-uncaged/
Day: October 9, 2014
The rise and fall of King Saul – part 1 (1 Sam 9-15)
Having spent three days looking at 1 Samuel 8 (on how Israel wanted a king like the nations around them), we’ll speed up a bit as we see how having a king like the nations around played out in the life of Saul. You can read all of 1 Sam 9-12 if you like, or follow my edited highlights, below.
In chapter 9 we’re introduced to a man named Kish, who had a son, who was Israel’s future king. He just didn’t know it yet:
9:2 He had a son named Saul, an impressive young man without equal among the Israelites—a head taller than any of the others.