2 Samuel 3:32
And they buried Abner in Hebron: and the king lifted up his voice, and wept at the grave of Abner; and all the people wept. And they buried Abner in Hebron: and the king lifted up his voice, and wept at the grave of Abner; and all the people wept.
Abner was buried in Hebron, and his burial was public and with honors. David did not visit just retribution upon the murderers, Joab and his brother Abishai, because the kingdom was still unsettled and they were too powerful in position to punish. Instead he followed the bier himself as chief mourner and wept at the grave. He kept a fast on the day of the burial, and he required the army, with Joab at its head, to take part in the mourning with rent garments and sackcloth. By this public burial and mourning he manifested his abhorrence of Joab's treacherous murder and his own and his kingdom's guiltlessness from Abner's blood. At the grave he pronounced an elegy that was a cutting rebuke of the murderers.