2 Samuel 16:9-13

9And Abishai the son of Zeruiah said to the king, Why should this dead dog curse my lord the king? let me go over, I pray thee, and take off his head.

10And the king said, What have I to do with you, ye sons of Zeruiah? so let him curse, for Jehovah has said to him, Curse David! Who shall then say, Why dost thou so?

11And David said to Abishai, and to all his servants, Behold, my son, who came forth of my bowels, seeks my life: how much more now a Benjaminite? let him alone and let him curse; for Jehovah has bidden him.

12It may be that Jehovah will look on mine affliction, and that Jehovah will requite me good for my being cursed this day.

13And David and his men went by the way; and Shimei went along on the hill's side over against him, and cursed as he went, and threw stones at him, and cast dust.