2 Samuel 16:10-13 King James Version (KJV)
10 And the king said, What have I to do with you, ye sons of Zeruiah? so let him curse, because the Lord hath said unto him, Curse David. Who shall then say, Wherefore hast thou done so?
11 And David said to Abishai, and to all his servants, Behold, my son, which came forth of my bowels, seeketh my life: how much more now may this Benjamite do it? let him alone, and let him curse; for the Lord hath bidden him.
12 It may be that the Lord will look on mine affliction, and that the Lord will requite me good for his cursing this day.
13 And as David and his men went by the way, Shimei went along on the hill's side over against him, and cursed as he went, and threw stones at him, and cast dust.