After Nathan's vision, David leads a series of military victories over surrounding nations. What is the relationship between this chapter and the previous one, which begins with the words "And it came to pass, when the king dwelt in his house, and God had given him rest from all his enemies round" (7:1)? Why did David treat Moab with particular cruelty? Why did David "Hough all the chariot horses," and how does this action differentiate him from Shaul?