I've never noticed this before. Sometimes, you notice something in the Bible, it's then so obvious that you wonder why you didn't see it there before. That's a good sign that it's on the right track - it's noticing what's there, rather than reading in things that are not there. It also means it's highly likely that lots of other people have seen it before, and that I'm just playing catch-up - so there are no claims to originality here.
The opening of the book of Samuel anchors the book firmly in its context, as a book following on from Judges.
