Finishing chapter 6: King David's minister of defense, Yoav, who did not rebel against the king (in contrast to the other discussions of those who did, like Avner, whose downfall is described). And beginning chapter 7: Ordering the deaths meted out by the court, depending on the violation that is punished by death. Which leads into the treatment of the mishnah and the way it presents this information (and other) directly.