2 Samuel 16:9-14

9Then Abishai the son of Zeruiah said to the king, "Why should this dead dog curse my lord the king? Let me go over and take off his head."

10But the king said, "What have I to do with you, you sons of Zeruiah? If he is cursing because the Lord has said to him, 'Curse David,' who then shall say, 'Why have you done so?'"

11And David said to Abishai and to all his servants, "Behold, my own son seeks my life; how much more now may this Benjaminite! Leave him alone, and let him curse, for the Lord has told him to.

12It may be that the Lord will look on the wrong done to me, and that the Lord will repay me with good for his cursing today."

13So David and his men went on the road, while Shimei went along on the hillside opposite him and cursed as he went and threw stones at him and flung dust.

14And the king, and all the people who were with him, arrived weary at the Jordan. And there he refreshed himself.