The son that died on the tree was Absalom.  If you happened to see a parallel to another Son who died on a tree, but for other people’s sins, I’m sure there is something to that.  Jesus Christ is at the center of every story in the Bible.  Anyway, focusing on the positive side of David’s reign, we should probably mention that it was at this time that the Ark of the Covenant was recovered.  When David had it brought to Jerusalem, there was singing and dancing with everyone giving praise to God.  This only had a tiny hiccup when a dude touched the ark outside the biblical specifications, thus killing him on the spot.  What was this guy’s name?