9 And David answereth Rechab and Baanah his brother, sons of Rimmon the Beerothite, and saith to them, 'Jehovah liveth, who hath redeemed my soul out of all adversity, 10 when one is declaring to me, saying, Lo, Saul is dead, and he was as a bearer of tidings in his own eyes, then I take hold on him, and slay him in Ziklag, instead of my giving to him 'for' the tidings. 11 Also—when wicked men have slain the righteous man in his own house, on his bed; and now, do not I require his blood of your hand, and have taken you away from the earth?'
Matthew Henry's Commentary on 2 Samuel 4:9-11
Commentary on 2 Samuel 4:8-12
(Read 2 Samuel 4:8-12)
A person may be glad to obtain his just wishes, and yet really regret the means by which he receives them. He may be sorry for the death of a person by which he is a gainer. These men shed innocent blood, from the basest motives. David justly executed vengeance upon them. He would not be beholden to any to help him by unlawful practices. God had helped him over many a difficulty, and through many a danger, therefore he depended upon him to crown and complete his own work. He speaks of his redemption from all adversity, as a thing done; though he had many storms yet before him, he knew that He who had delivered, would deliver.