33 The king lamented for Abner, saying, "Should Abner die as a fool dies? 34 Your hands were not bound, your feet were not fettered; as one falls before the wicked you have fallen." And all the people wept over him again. 35 Then all the people came to persuade David to eat something while it was still day; but David swore, saying, "So may God do to me, and more, if I taste bread or anything else before the sun goes down!" 36 All the people took notice of it, and it pleased them; just as everything the king did pleased all the people. 37 So all the people and all Israel understood that day that the king had no part in the killing of Abner son of Ner. 38 And the king said to his servants, "Do you not know that a prince and a great man has fallen this day in Israel?
Matthew Henry's Commentary on 2 Samuel 3:33-38
Commentary on 2 Samuel 3:22-39
(Read 2 Samuel 3:22-39)
Judgments are prepared for such scorners as Abner; but Joab, in what he did, acted wickedly. David laid Abner's murder deeply to heart, and in many ways expressed his detestation of it. The guilt of blood brings a curse upon families: if men do not avenge it, God will. It is a sad thing to die like a fool, as they do that any way shorten their own days, and those who make no provision for another world. Who would be fond of power, when a man may have the name of it, and must be accountable for it, yet is hampered in the use of it? David ought to have done his duty, and then trusted God with the issue. Carnal policy spared Joab. The Son of David may long delay, but never fails to punish impenitent sinners. He who now reigns upon the throne of David, has a kingdom of a nobler kind. Whatever He doeth, is noticed by all his willing people, and is pleasing to them.