2 Samuel 3:28 (BSB)

Afterward, David heard about this and said, “I and my kingdom are forever guiltless before the LORD concerning the blood of Abner son of Ner.

From 2 Samuel 3. Also in the ESV.

Commentary on 2 Samuel 3:28

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 2 Samuel 3:22-39: We have here an account of the murder of Abner by Joab, and David's deep resentment of it. I. Joab very insolently fell foul upon David for treating with Abner. He happened to be abroad upon service when Abner was with David, pursuing a troop, either of Philistines or of Saul's party; but, upon his return, he was informed that Abner was just gone (Sa2...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on 2 Samuel 3:28: And afterward, when David heard it,.... That Joab had sent to fetch Abner back, and that he had stabbed him in the gate of the city, and he was dead; it was some time after it was done that the news of it was brought to David; this circumstance is observed, the more to clear the king from any concern in this affair: he said...
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on 2 Samuel 3:28: And afterward when David heard [it], he said, I and my kingdom [are] guiltless before the LORD for ever from the blood of Abner the son of Ner: (k) the Lord knows that I did not consent to his death.
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on 2 Samuel 3:6-39: 2Sa 3:6-39 Decline of the House of Saul. - 2Sa 3:6-11. Abner’s quarrel with Ishbosheth. - During the war between the house of Saul and the house of David, Abner adhered firmly to the house of Saul, but he appropriated one of Saul’s concubines to himself.