2 Samuel 16: 5 - 13
5 When King David came to Bahu'rim, there came out a man of the family of the house of Saul, whose name was Shim'e-i, the son of Gera; and as he came he cursed continually.
6 And he threw stones at David, and at all the servants of King David; and all the people and all the mighty men were on his right hand and on his left.
7 And Shim'e-i said as he cursed, "Begone, begone, you man of blood, you worthless fellow!
8 The LORD has avenged upon you all the blood of the house of Saul, in whose place you have reigned; and the LORD has given the kingdom into the hand of your son Ab'salom. See, your ruin is on you; for you are a man of blood."
9 Then Abi'shai the son of Zeru'iah said to the king, "Why should this dead dog curse my lord the king? Let me go over and take off his head."
10 But the king said, "What have I to do with you, you sons of Zeru'iah? If he is cursing because the LORD has said to him, `Curse David,' who then shall say, `Why have you done so?'"
11 And David said to Abi'shai and to all his servants, "Behold, my own son seeks my life; how much more now may this Benjaminite! Let him alone, and let him curse; for the LORD has bidden him.
12 It may be that the LORD will look upon my affliction, and that the LORD will repay me with good for this cursing of me today."
13 So David and his men went on the road, while Shim'e-i went along on the hillside opposite him and cursed as he went, and threw stones at him and flung dust.

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