2 Samuel 3:31 (BSB)

Then David ordered Joab and all the people with him, “Tear your clothes, put on sackcloth, and mourn before Abner.” And King David himself walked behind the funeral bier.

From 2 Samuel 3. Also in the ESV.

Commentary on 2 Samuel 3:31

• 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 3:31: And David said to Joab, and to all the people that were with him,.... To his whole court, Joab being present: for he did not flee, nor was he laid hold on in order to be brought to justice; which shows how great his power was, and that he was too hard for David, as in Sa2 3:39; however this he did, he enjoined his...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on 2 Samuel 3:31: David said to Joab, and to all the people that were with him, Rend your clothes, and gird you with sackcloth--David's sorrow was sincere and profound, and he took occasion to give it public expression by the funeral honors he appointed for Abner. King David himself followed the bier--a sort of wooden frame, partly resembling a coffin, and partly a hand-barrow.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on 2 Samuel 3:31: And David said to Joab, and to all the people that [were] with him, Rend your clothes, and gird you with sackcloth, and mourn before Abner. And king David [himself] followed the bier. (m) Meaning before the corpse.