2 Samuel 20:11

One of Joab's men. Joab left one of his personal followers to prevent any halt of the people round Amasa's body, and to suggest that he was a traitor. For he was to say to them as they came up, not only that "whosoever had pleasure in Joab," but also that "all who were for David, were to go after Joab." All loyal men were to regard him as captain of the host, and to disobey him would be rebellion. Naturally they would conclude from this that Amasa had not really been true to David, and that his death was the punishment inflicted on him for his past guilt.