2nd Samuel 3:34

31 And David said to Joab and all the people who were with him, Go in grief and put haircloth about you, in sorrow for Abner. And King David went after the dead body.

32 And they put Abner's body to rest in Hebron; and the king and all the people were weeping loudly by the resting-place of Abner's body.

33 And the king made a song of grief for Abner and said, Was the death of Abner to be like the death of a foolish man?

34 Your hands were free, your feet were not chained: like the downfall of a man before evil men, so was your fall. And the weeping of the people over him went on again.

35 And the people came to make David take food, while it was still day, but David with an oath said, May God's punishment be on me if I take a taste of bread or any other thing till the sun has gone down!

36 And all the people took note of it and were pleased: like everything the king did, it was pleasing to the people.

37 So it was clear to Israel and to all the people on that day that the king was not responsible for the death of Abner, the son of Ner.